My HHKB Type S collects dust since the Boba U4 came out.

It's a mechanical switch with a D shaped tactile bump.

The end result is a bottom out that feels similar to a Topre, but a much crisper action up and down.

Its subjective. I have a $1200 Topre modded with a Norbaforce case and custom domes, pretty much as good as it gets, but its not even close to my favorite keyboard. Its nice but I'd rank Zeal tactile switches, Box Jade, Box Navy, Tactile Alps, Blue/White/Amber Alps, and Zeal linear ahead of them.

So far I like Amber Alps the best by a large margin. They are kind of hard to find though. Like I said though its subjective. There are some people that try every key switch under the sun and still like MX Browns the best. There is no "best" switch and there is no wrong choice.

Also, for the uninitiated, a Topre is a unique type of rubber dome keyboard. Unlike most rubber domes, they actually feel quite nice and better than many mechanical switches. They aren't technically a mechanical switch though.

Having two HHKB Pro 2 (one work one at home) since years and i just can say you are 100% right ;)

I like typing on blues more, but I really enjoy gaming on my topre!