At what point do we justify spending insane amounts of cash for the ULTIMATE experience? I would rate my Key Tronic E3601 'ergo' feel like "85%" of what a Topre/HHKB feels like. I can buy these keyboards for 25-30 dollars brand new at Newegg or elsewhere.
The other keyboard feels better, but only marginally so. I really can't justify paying 200 dollars for a keyboard, as much as I think it would be the 'ultimate experience'. It's sort of like the hi-fi gurus with audio stuff. You can really go OVER THE TOP with special silver-wire cables, etc. to get the top-notch audio experience. How much of that experience is REAL, and how much is PLACEBO -- "I spent $1000 on wires, they MUST sound better."
It's like a hockey stick graph -- "bang for the buck". The Key Tronic board delivers 85% of the feel of that Topre switch to me. But the cost of a Topre/HHKB is over 6 TIMES the cost of this little Key Tronic. I can't pay a 6x premium for 15% 'feel'.
To each his own, but I've found something that I actually quite like to type on. Black Alps, Cherries of all sorts, Model M, all good at what they do, but my preference is for the Topre type switch. Really, it's a GOOD rubber dome with a spring, no? I'm in love with this Key Tronic, rubber dome and all. It has the ergo keys, differently weighted from 80g on 'banger bar, CTRL, ALT' to 35g for 'pinkies'. It feels great. I'm using the Model E3601 but I'd go for a E3600 too -- the latter being preferable to me as it has a standard Enter and double-wide backspace. I also am used to the \ above the Enter key.
** not affiliated with Key Tronic in any way, this is just what I've found in the last couple weeks since being here and going out to try all sorts of keyboards. I've worked in IT since 1995, and was a geek kid before that all my growing up years. I know what I like, what is BAD (these new Dell minimalist boards) and what are good (much of what I've tried.)