I might be one of those people that dislike the HHKB and Topre in general. I have been a buckling spring warrior for some time now, and the clicktastic feel of Model M's and F's sticks in your blood. I originally liked Topre because of the lightness of the switches, but some Model F's are just as light with a better feel to them.
I got a HHKB a couple days ago and have been using it since it walked in the door. I am not a big fan of the delete key and lack of navigation on the first layer. I occassionally have to fumble around to get to those arrow keys, and it annoys me a bit. With heavy navigation, my hand gets a bit tired having to hold down the function key.
In addition, the keys do feel quite mushy, and I was hoping for a crisper, more high quality feel. The "thock" is not impressing me much. After a couple days on the HHKB, I am about ready to go fleeing back to my buckling spring keyboards. I have a hunch that I am more accurate typer with buckling spring boards. Not really sure. I will give the HHKB a couple more days to form a complete opinion.
Regardless, this keyboard is a beautiful piece of engineering, and I commend the designers for creating the thing.