Before I got the tester I only have experiences with browns (filco mj2 and xarmor u9) and blues (razor). Now among the new types I'd say I like the ergo-clears best. It somehow feels close to brown but has more tactile and slightly less force. It's very enjoyable under fast typing.
The reds and blacks are the only ones without tactile. They feel good but I prefer the tactile ones since I type a lot and don't do much gaming.
Greens are also tactile and clicky, but require more force than the blues.
Tacto-blacks, by name, are blacks with a tactile feel. Somehow I couldn't feel much difference between tacto-black and grey - they are just heavy with tactile.
sorting by the strength of tactile feel, ergo-clear > clear > tacto-black ≈ grey > brown
in terms of required force, I feel grey > clear > tacto-black > brown > ergo-clear
so, if I get a chance to buy my next mechanic kb, I will try ergo-clears ;-)
Now I'm done with the review part. As a newbie I just couldn't write anything more professional...
On the way of taking the tester to some interesting places ;-)