I also really like flying charter! usually because it means i'm on my holidays! As BFS
have said, they are all much of a muchness, but i'll give my opinions...
First Choice - Leading the way! Excellent service, and the new 767 aircraft will have more legroom and better PTVs than BA
and Virgin... go on!
Thomas Cook - Again very good, perhaps only falling behind First Choice because of FCA
's new long haul programme.
Britannia - Always were the ones to aspire to. Always taken as "the best", and not without good reason. However in the last couple of years, with TUI and everything a lot of people feel that the service etc has dropped a lot, which is a shame as Thomson/Britannia have (had?) a huge loyal customer base.
MyTravel - Again a good company overall. Not having a good time of it at the moment, and could especially do with the press laying off, everyone picks up when MYT have a 30 hour delay, but never when the others do. However, still a lot of people have great flights with them. MyTravel either get it spot on, or way off the mark!
Monarch - They also used to have a good reputation in charter but it seems its all gone to pot. They're punctuality has slipped a lot the last few years, getting worse while everyone else is getting better. Its a shame, I've had some great flights with them. I think they're concentrating a lot on their schedueld side (which is great!) but perhaps too much... at the expense of their charter customers?