The scheduling is basically the same. The same guy who designed the AVENGE bid process also did the L3 one. It's based on seniority. You bid from anywhere from 60 to 120 days. The guy I spoke with says he does two 65 day bids per year, and that's it. He said so far (3 years running) no one has said anything to him about it.
Travel is coach (long ride in the back).
The pool is based on CRC (Contractor Replacement Course) availability dates, but don't expect long (less than a month) wait from hire.
The pay is about $15 per day less than L3 to start, but they have seniority increases that cane bring you to about $15-$20 more than the average L3 guy. But L3 offers extra pay for a variety of things also.
AVENGE has is probably second best on living conditions. (Dynamic, Avenge, and last is L3)
The key thing is, get on with who you can. Once one hires you, it's easier to get a job at any of the others.