Cuban 8-
You should consider Thomsonfly (Britannia). The 737 is being brought up to the mainline T+C's, with even the Final Salary pension available in the mid-term.
Start on the 737 and end up a skipper on the 767-300 (7e7?). Good rosters, good T+C's, great bunch of guys. Never any summer Captains, etc, etc.