Iwill be flying a US Air A321 to Pittsburgh on Sunday.... my first Airbus flight! I was wondering if anyone has compared cabin comfort (noise level, seats, etc... for example) of the later model 737's vs. A321?
Maybe you will feel differently after your flight, but the only thing I can say in reply to the question in your subject, is "Not particularly."
I flew on a B738 recently, and found it to be just as comfortable as the A321. In terms of noise level and otherwise.