Okay, bringing it back for closure. Ended up with the following actually-in-my-hands a couple of days ago:
Used (like-new, no shiny keys, box and all, etc) HHKB Pro2 white, printed
New Filco 104key Brown NON-NKRO
both were too good of deals to get the 'better' versions of each, in my mind.
HHKB Pro 2 --------------
So anyway I've been using the HHKB for the majority of the time just out of principle. Very nice, very crisp, looks awesome with the lettering to my surprise... so bold, defined, clear. The layout itself took maybe a day of getting used to, mainly backspace, but just starting to get used to taking advantage of home/end and stuff.
Build quality and all seems great, I think the plastic plate thing is something to keep it light and the halves are not supposed to match up.
Changed my mind on the DIP switches... I thought for sure I would want Mac mode, and I still do. But switching Alt and Fn was a mistake... how does anyone properly use home/end having to reach with left pinky to start using them? All my pre-planning was useless when I actually started trying to use it like that. Still can't figure out some things... like, the right Alt/meta don't seem to do as I expected all the time. Seems like the right Alt will send CTRL+ALT sometimes? Or was that the right meta? Can't remember how it works since I have been switching back and forth.
Arrow keys and all the other stuff not as bad as I expected. Ctrl is nice, but I haven't played games yet. Part of my decision to switch Alt and meta in the first place, though, was to be able to hit Alt (old meta) with my thumb on WASD (/WARS).
Still have no idea why my index finger though has Fn keys for keys that already exist... especially without combos, like / and -... while my right pinky has to do so much work!
Form factor is better than I even hoped, it's great having the keyboard centered with the mouse off to the right. Trying to figure out how to get the proper desk space to use my 104-long Filco wrist-rest under my HHKB AND the mouse at the same time, as that would be great.
The actual keys/switches/typing part, yes, it feels great. So much more exact than my G15 (that before sending it home, tried one last time, felt kind of nice, like tapping on a pillow, but hard to say I would PREFER it). BUT, after studying my G15 in wait of the key keyboards, I was surprised to find out how much less different the Topre is than a membrane. Heresy, I know, but I feel like the Topre really is like rubber-dome STYLE, but the best of the best rubber dome ever. I can't feel a tactility point yet. They key seems to do the same "up or down, no between" action as the G15. Keys don't wobble, don't mush when stuck down, etc, but it still FEELS like there's rubber underneath each key. Not in a bad way, just not what I expected.
Filco 104key Brown Non-NKRO --------------
At first, I took the Filco out of the box only to do a rollover test (with disappointing results) and basic functionality tests. For some reason it is VERY picky about USB ports though, I thought it was broken for a long time.
Felt weird, little bumps in the keystroke, keycaps having used the HHKB felt SUPER EL CHEAPO, lettering didn't look as nice, etc. It is heavier, more of a heft to it.
Why is my Filco logo all scratched when I look at it in direct light?
Still too paranoid to put on the red Esc (or flip the HHKB spacebar) even though I have taken apart my G15 and other keyboards plenty.
So I put it back in box to remain pristine for a while.
...
But yesterday I was unexpectedly forced to downsize here in Iraq and had to pack up all my nice new packaging. This was very hard for me. Waterproofed the boxes and all before letting them go. So the Filco sat in my laptop bag, I'm taking it home with me! No way I went through all the trouble to not get to use it for X (XX maybe even) months. The Dell AT101, on the other hand...
So anyway today I got curious again and took the Filco back out. Combination of making sure it was okay in the box and all... easily moved the HHKB aside. Time to start actually trying to type on the Filco.
And wow.
I really hate to say it.
But I did a 5min test and this post up to here with the Brown switches, and I am amazed.
They are so light. I can feel the little bumps and after only a few minutes I am only bottoming out half the time. It feels great (though I am offcenter again from the desk, and maybe my arm only hurts because of this, but my fingers are not tired, nor were they with the HHKB, then again, the G15 never really gave me problems either).
It's like the Filco has character where the HHKB is soulless perfection. I make myself keep going to type more on the Filco instead of just getting the job done, and rolling along for a few seconds without bottoming out is awesome. The layout seems wrong after a couple days on the HHKB, and I don't need about half the board, but software can kind of fix that...
Non-linear note: going back up to edit some stuff about the HHKB, my opinion kind of only solidifies as I go on...
Not that I think such a test is very scientific, because of the human factors, but I don't know which I type faster on, but the clicks of the Filco make it feel like I am getting more done. It also feels more 'fun' and like I am involved more. It ALSO does feel significantly different than a membrane (see stuff above on the Topre switch if you skipped it). When I was tapping keys individually at first they felt cheap and crunchy, but when you type on all of them, it is a much nicer feeling.
Anyway, so now I am TORN between that which I already own! Not enough space on this tiny desk for both. Each has its merits, and I am blown away by the Filco even though I spent 1/3 as much as I did on the HHKB (even thinking it was perhaps frivolous, until I used it). I won't say (admit?) that it is better than the HHKB, and I definitely love the HHKB's softness and quietness and layout and look, but the Filco is DEFINITELY not going to remain perfect in-box, nor will the HHKB become something I don't use every day...
OH MAN, this is not easy...
TL,DR: the HHKB is just as described, perfect. The Filco feels totally different and actually lives up to the descriptor of "MECHANICAL" keyboard.