One note is that it is generally viewed as being easier to break out in a VT because their retention is supposedly lower (I didn't do either, so I am just passing on an impression).
I bet your impression is correct. When I was Ops O in a VT (A4) squadron, we fought four items in the retention battle:
1. Our JO instructors were collecting about 400-500 hours per year (good for the airline interview)
2. There was lots of airline gouge, and almost all our SELRES instructors were airline guys
3. Our JO's saw, via our reservists, that they could fly the big iron and still fly a Navy airplane four days a month (our active duty guys quickly figured out that, by regulation, our SELRES were required to be given priority on flights since they only had so many days available)
4. Our JO's felt that a VT wasn't as competitive in the near term as those going to a FRS
As a result, our first tour retention was barely 10%. Of course, that was in the late '80's and early '90's, but I bet the same issues remain year over year.