No doubt the AB has much better trips (IMO), better basing options, and is a more comfortable machine to fly. The big advantage of the 190 is the potential high QOL first year. I had every weekend off by the 9 month point (YMMV) and 2 weeks off at Christmas (AETC style!). I know as an AF guy you're thinking, "I'll probably have weekends off by year 2 anyway" (I know I hought that). It's probably 2 years before you'll get weekends off on short call and 3 to 4 for Long call, depending on the base of course. Line holder weekends off...I have no clue. This is mainly due to the way PBS works. When it's building the schedules and gets to the point where it needs pilots to work weekends, it will do it's best to make every remaining pilot work weekends. You can adjust your schedule and get some weekends off, but that takes some skill and luck as well.

You could be held for up to a year after you get awarded the Airbus. But...you will be paid at the group 2 rates starting in the month of your award (and at year 2) So you'd have the best of both worlds, high QOL and better pay.

As far as getting stuck on the plane long term. It is possible, but not very probable. We need to hire like crazy right now, and as long as that's the case, there will be movement. Now, if there were a game changing world event (Sept 11, 2001) or major recession, etc. yes you could get stuck.

If PHL is a tough commute for you, I'd avoid it.