I've been looking for a keyboard I can leave at work so I don't have to keep taking the HHKB Pro 2 back and forth, and I knew this was a shot in the dark, but I bid on this:
It's an (original) HHKB Lite, KB-9975.
I got it today, it was a little harder to set up for Macs than my Pro 2 was, but after I got it all working the way I need it to, I found that the action is not too bad. The keyboard is so unused, the spacebar doesn't even have a wear spot or any scuffs on it. It wasn't even that dirty, so it's not like it was worn in.
It's a membrane, but the touch is really light and even. The only time I get the mashed potato feel from it is when I hold down modifier keys for combos. Typing is pretty nice on it. I wrote a few longer things at work and while it completely lacks the crispness of a mechanical keyboard, and my typing speed took a grumper, it isn't half bad.
Compare this to my review of the HHKB Lite 2 in the wiki. That thing sucked, it was a pile, a POS even and I hated it. If I were to review this one, it would fare much, much better. This keyboard is much more solid feeling than the Lite 2 and the key caps don't have that cheep Armourall feel either.
Maybe hell will freeze over now that I am saying this, but a membrane keyboard has in fact impressed me. Don't look for me to dump my ungodly expensive mechanical and capacitive keyboards anytime soon because the HHKB Lite doesn't compare, but I thought this was significant enough to tell you cats about.