Gabbert is overrated. Ran the spread offense in college which inflated his stats which aren't even good to begin with. Most of his passes were less than 10 yards and completed something like 30-40% of his passes on 3rd down compared to 70% for Andrew Luck. He's a product of the system. I would go more with Andy Dalton or Jake Locker. Dalton is a proven winner and a 5th year senior. Locker doesn't have the best mechanics but has proven to be a competitor and has the intangibles needed to lead a team. Having said that, I would choose Locker if I could only pick one QB.
I guess Locker, but I can't say I have a strong feeling about him. To me QB success in the pros is all about desire, competitiveness, and leadership and I think he has more of those qualities than the other guys.