Yep, Thomas Cook flights are TCX...I've flown with them before, but to Mexico, not Florida. They weren't bad - I'd choose Virgin over them definately - but nothing really to complain about. I think we had to pay extra for meals on the flight...but that might have changed now - I would check. And, as far as I can remember, we had to pay for any snacks or beverages we wanted too.
On the way back, we were sat towards the back, where the aisle's a little wider as there are only two seats either side...much better than towards the front..
I'm not a great fan of them really, but thats probably because its not the best service I've received...then again, I've not really got *much* against them.