I do concede that Topre sliders move more smoothly than those in new MX switches. All the new MX switches I own seem to be at least a little bit "grindy", although it goes away after a good wear-in.
I stick with my verdict, though, that currently there are no Topre boards that I could consider using as "the one" for the rest of my life. Once you've tried a proper ergo board, you can't think of a "normal" layout board as the ultimate no matter how good the switches are. It's very hard to make a custom board with Topre switches and there are no ergonomic layout boards using Topre switches. So for now, I'm a MX guy. Not to mention that I love to modify my switches and tune them to my taste. Again, not possible with Topre. Then there are keycaps. They can change both the look and the feel of the board, due to material, profile and mass. How many different aftermarket keycap sets are there for Topre? What can I say, I like to have options.
...
Ergo Clears and Ghost Blacks are love.
Err, I mean Topre 5ever.
+1. Ghost Blacks are my favourite linear switch. Favourite tactile are ErgoClears, 2nd favourite are "Panda" Clears (Clears with Black spring). I don't like MX clicky switches, as I feel the click is rather contrived and high-pitched. Sounds rather cheap to my ears and I don't like the hysteresis they have, too.
I have yet to try an Alps that I really like (old Apple IIc and a calculator with Alps switches are all I've tested so far, though). Going to get some Matias clicky and silent switches to try, but I think it will take a lot to beat the customised Clears I'm currently using.
I may also end up getting a Topre board for experimenting with (probably a Realforce 55g). xwhatsit has inspired me to try some capacitive sensing experiments and I'd like to try making a Topre version of my ergo layout for the challenge and to see how it feels.