Avjet is a good place to work, it is a 135 operation, so certain things come with flying charter that you just have to deal with.
While I was employed there (I left to pursue a part 91 job) I never heard of anybody not getting paid their expenses. Sometimes it took a while (couple weeks maybe) but I never had any of my expense reports "lost."
The people were great to work with, and I'm gonna miss flying with a lot of them. I would say if you are looking for a flying job in Socal and don't mind the 135 lifestyle, by all means apply and try to come aboard. The flying is good - great clientele, lots of hours available. The equipment is great and if you get hired onto the Westwind, the chances are that in 2 years you will be flying a late model Gulfstream Product. I'm speaking from experience.
There are a lot of "sleazy" 134 1/2 operators out there and Avjet isn't one of them. Best of luck.........