Perhaps not of your concern yet, what's the future lifestyle prospects in the two different jobs? I left a low cost carrier (left seat) for a career airline (right seat) where I can get part time to be with kids, part time for studying, summer holidays, proper seniroty list and a whole range of other benefits. Your situation may be entirely different to mine, it's however a perspective to consider.
What 172 said. Which job will give you the most time off with your friends and family, doing activities that you like? The glamour of flying any aeroplane for a living fades drastically after your umpteenth night in a hotel room miles away from home...