I'm thinking that the A321 is going to be one hell of a pig, especially on the transcon legs. I'm sure it can go coast to coast, but initial cruise altitude will probably be in the high 20's to low 30's. Doesn't make for a very good ride on those "weather days". Same issue with the 767-400 and the 757-300 I guess. Anybody ever flown a 321? Is it the same wing?