They are a better amp than a Sony/Pioneer/Clarion, but not real high end. I would check ebay before you buy at your local shop. Those amps tend to be marked up much higher than they need to be. They look real nice, so I think most people assume they are much nicer amps than they really are and the shops make a strong profit on them.
I have heard they are not very dependable and tend to get blown. Check some of the review boards on car amps and you will see what I am talking about. For the money, there are much nicer amps out there. Check out www.thezeb.com
. There are some great deals, they come with factory warranties, and you will get a much higher quality amp than the Audiobahn amps for the money. For instance, check out the Hifonics amps at the zeb. They are at a great price right now and the specs are better.