Bid narrow body. Reason: quickest route to a line. Reserve sucks and doing it on probation doubly so. 1st year pay rate is the same but you'll probably make more on the narrow body due to being a line holder sooner. It also gives you options. If you decide you want the 756/777, it will still be there and you can go anytime you want. If the economy takes a dump and you can't, you'll be glad you didn't. You can also optionally bid reserve on the NB and be the senior guy. People who say reserve doesn't suck are usually doing it with some seniority. Take the advice of FOs at UAL who decided not to upgrade. Seniority in BES is EVERYTHING at UAL. Don't think you're smarter than >50% of the pilot group who decided to let those captain slots stay open. BTW, that's another option. If you're narrow body now it will make your upgrade ina year much easier. Have fun with that though.