If you're worried about what airframe will get you hired at an airline, don't. I've been at 5 major airlines, one commuter and the Air Force Reserves (C-141 and C-17). I really don't thing my "heavy" time helped me more than anyone else. I've been in class with every type of pilot you can imagine and it really doesn't seem to make a difference where anyone came from. Some may progress at a different pace than others, but the majority finish at the same time. Training is tailored to the lowest common denominator. And don't forget, whatever you want to fly, there's a Guard/Reserve squadron out there that probably flys what you want, so hand deliver your resume and you may be suprised.