Pros: free meals usually, some training, connections to better contacts and companies
Cons: management!! all techs are disposable and some managers make sure you remember that.
If you don't have kids and you want to learn how the AV world works. Psav is basically AV 101. They don't pay well at all, and they expect a lot of time. However... thats the way the AV world works. The benefits are good, and the work environment is fun. Be warned, you can not support a family at their wages.