QOL is a subjective matter. For the most part, I think it's pretty good. There is certainly room for improvement, but you could do much worse.
Vacation is one of those areas that could improve. You start with one week and don't get two until year 5. I'd like to see that change.
Benefits are average. They stink compared to NJA, but so do 99% of non-government jobs. It is very rare these days to not pay insurance premiums and NJA is the exception, not the rule. That being said, I wish ours were lower, but again, they're not out of line with the national average.
IMHO our 401k is great. We get maximum match with minimum contribution which frees up money for outside investments (if you do that), or for whatever else. It's extremely adventageous for younger guys with families who could not afford to contribute more to begin with. Not so much so for guys who contribute the max each year.
For me, the 7/7 has been pretty hard. I've come home after midnight once, and after 16 hours a few times (you get a day of OT for that) but never been held out involuntarily to fly another day. In fact, about 1 out of ever 5 trips I don't get called for the first day or two, and in less than 7 months, I've not been called out for two full tours. That's two three week stints on their dime. Your technically on "home reserve," so you can't travel, but it's always nice being home. On this matter your mileage may vary depending on base and fleet type with a little good/bad luck thrown in.
Regards
HnP