I fly the 320 and ride the 320 mostly and I find it is a little better than the 757-200 because of the wider cabin. The seats are a little wider and the isle is definately wider. I have never flown the 757 but it seems to ride a little better than the 320 in rough air, perhaps the weight.

Anyway, the 757-300 is a whole other story. It is just TOO long for a single isle. The -200 for a passenger is really no worse than the 320. But the -300 sucks. It seems like it takes forever to board and/or unload and getting to the head is just awlful if the carts are out or even if they aren't. Add to that, being a passenger in the back and it seems like the rudder is working overtime, it can be pretty uncomfortable due to the long arm in a wind. I think the -300 was a stretch to far for a narrow.

Having said all of that if the airline makes money and pays me to fly it, well, let's go then!