yeah I went and read... looks like it's just "upgraded" components. Never know if that means cheaper for us or actually better. looks like it's rev 2 of the ergonomic adjusters. There were a few things like the tilt adjust that did wear out when you toss your full weight back against one ratchet mechanism, it's going to get messed up.

As for feel stuff I just try before I buy. Buy them on craigslist at market price, try them for several months, sell the one you don't like. Simple. Or try, sell, try sell, buy new.