For me, the DC10 or death cruiser. (btw.... not only people here refer to them as death cruiser, within monarch Airline who (did) operate one, their staff knew it as that as well, and i think Airtours (or MyTravel) know it as that also!!!)
There is a reason, i had an awful experience on one in the past, so bad that passengers demanded the aircraft was taxied back and we deplaned. now i know, this is probably a one off incedent, down to the airline, and that the -10 has been a great aircraft and workhorse to many across the world, but that one incedent has stuck in my mind, and i would only ever fly one if it was essential, i would be repared to pay MORE for a ticket on another airline using another aircraft, thats just the way it is.
One bad experience should not make people judge things like this forever more, but unfortunately does, hence why i wouldn't fly another DC10.