Well.... do a search and check out the other thread. You'll see that a lot of people have been having problems with them. The warranty on them is great, but I'd rather have an amp that worked with no warranty than an amp that blew multiple times with a great warranty.
Smartass sells a lot of them though, so he'll probably get bent out of shape because I've said this. But it's the truth.
I've offered to do some testing of my own for him to maybe change my mind. (and I'd gladly post up a glowing review) But I don't think that's going to happen any time soon