Ahhhh, see Mr Intense DHer, your problem there is that you've compared the good ol'M6 to bikes in a completly different price bracket. I mean seriously, it's quite obvious that an M6 will feel good compared to a Kona or a Norco.
Anyway, the M6's that i've ridden have all felt pretty average i thought.
Bogged down in rocks, couldn't jump, heavy, pricy and shocking pedaling efficency.
Don't know why you'd bother when you could pick up a GT Bump for way cheaper.
Just as capable, if not even out-performing the M6 in most areas of riding.
This is the bike you should be comparing the M6 to, not a glory or kona etc.
But hey, thats just my opinion.