Garbage? Man, there was no MX game better than Unleashed on the PS2! Hands down, dude. lol As far as Untamed goes, I got a taste of it and it had potential, so yeah it needed some work. Reflex looks like an all new game though. They got the rider reflex system where I guess you can control the driver and the vehicle, new trick system, and the terrain deformation stuff. I'm looking forward to making my own ruts!
If you're so curious, just get the demo on the 12th, man. It's gonna be pretty damn sweet. I doubt there'll be an MX game better than this right now.
I've been watching all the gameplay vids on youtube and it's looking slick. Just check this out and see what you think:
http://www.youtube.com/watch?v=rvjzCRDRtCk