Is MAC okay?

I have a 2001 Ford Mustang and I want to buy dual exhaust for it soon, but I don't feel like spending $500 for it. I found some exhaust at www.mustangwarehouse.com for $300. It's by MAC Products. I had never heard of them before and I asked around, not that many people have heard of them before, either. I was looking around on other Mustang websites and I found exhaust by MAC on a Mustang, so I know other people have bought them. I just don't want to spend that money for p.o.s. exhaust.
Does anybody know anything about them? Do you think it would be okay for me to buy them?