I'm 6' and about 180 lbs and I ride a T. Rice 161.5 and I love it. Just as a FYI, the 153 and 157's have round noses and tails while the 161 and above have pointed noses and tailes. I find mine is great everywhere on the mountain and also just tears through the pow. I use it for pretty much everything but the park. If your going to be sticking to the east coast more than anything, I say go with the smaller ones, but if your coming out west and plan to hit the pow alot, 161.5 is perfect all-mountain that also floats so nicely.
If your completely set on the shorter, blunded ends, either one would be nice, but if you plan to hit any kind of jumps I would be a little skeptical about a 153 on bigger kickers. If you want to use it for everything, go 157 or 161 if you are always on the hunt for pow like me. lol