I had one of the last 100mm Marin Riftzones with quad link arrangement, which I quite liked. Been reading lots of stuff on the new quad 2 frames with 120mm travel. Lots of stuff in various reviews and the web about them being quite active. I never really noticed this on the 100mm version.
I know I should probably get a test ride but does it pedal at all similarly or is it a totally different suspension set up?