Pretty much what SinBin said..
Been at BA about 5 months too and only had one blindline (again through choice). Otherwise I've got one of my top 10 trip line choices each time... had plenty of weekends off and the opportunity to do overtime is fantastic, particularly if you're still paying off flying debt. Granted I think the seniorty list is moving fairly rapidly at the moment...
Contrast this with my last carrier where roster stability was non existant (can't count how many times I picked up changes on the day at report) and I could not be happier!