I wasnt gonna tell anyone this but I did have an opportunity to ride a 29er this spring while my quick, corner railing, massive air catching 26 was getting tuned.
Here the deal: 29er sucks cock, period, end of story, not up for debate. If you ride like me, and severly slay corners, and have the front wheel off the ground 40% of the time, and both off the ground another 40%, and push the bars down in turns and huck anything, at all, even worm carcasses, 29er is dumb.
I rode a rumblefish, and it was goofy, didnt accelerate out of a hole shot, front wheel didnt lift as easy as a 26.
I sent it off a few jumps, not little ***** jumps, but real ones. I flat tabled it, it was like trying to fvck a prostitue through a chain link fence, it felt horrible and down rite dangerous. I landed with one leg behind the bike and blew the next set. Their use is limited. I gave it an honest try and my friends ever agreed that Im twice as fast on a 26, and i aint kidding when I tell you I'll rip a fvcking 26 off anything, 29er - not so much.
The 650b is just a gimmick, like 5 hour energy. If you want big wheels just get a 29er, if you want 5 hours of energy, just snort chalk. Im out of this one, once again.