We used Absolute Light & Sound for our wedding this year and were very impressed. We had visited with a couple of other DJs to determine who to use and these guys were 1/3 of the price of the others, but seemed to also be the most interested in doing the wedding the way we wanted it to be done and to ensure everyone there had a good time. We WERE a little worried that it might be one of those ""you get what you pay for"" type of deals and we'd wind up unhappy, but we LOVED our DJ and the experience...and were able to do some other cool elements of our wedding based on the money we saved.
Pros: price, friendly people, are focused on you
Cons: none come to mind