I took BA over an imminent command at Ryanair and would do so any day of the week. I far prefer moaning about BALPA to "working" for an airline with no union representation. Battles with management over rosters and T&Cs are hardly unique to BA. The whole experience of going to work (LHR embuggerance and driving half the M25 included) is significantly better than anything I had at FR.
Wider morale within the organisation isn't great, and the holy grail it certainly isn't, but I would still describe the job as first among equals. If you have no desire ever to do LH and you are at EZY say, consider carefully. If you are at Ryanair, I'd jump at the chance. If you just want longhaul Virgin is just as good an option, better in some ways given their lower annual hour limit and beach fleet options.