The 747-400's and 777's are great.

It seems there's pretty good agreement that the DC-10 is among if not the worst. I've heard flight attendents complain about them as well- except they like the huge galley in the rear on breaks! No wonder McDonald Douglas was swalowed up by Boeing!

The B757 and B767 the newer or refurbished models that have the newer paperthin seats in coach class drive me bananas. When the person behind you goes for a magazine you get drilled in the back! And that's when you are fully upright!