Their ok but it really depends on what you are using them for, subs, highs ect. Personally I don't care for them but it is really what you like. I could say they **** and the next guy could swear by them so it's your choice. Personally I like crossfire or OZ audio. I had all OZ but have now moved to all crossfire. The BMF amps are one of the best I have ever heard for subs and the TEK are clean and crisp for highs and they are priced pretty good as well. If you really want an amp for subs I would say the new crossfire VR2000D ( pushes about 2400 watts @ 1 ohm), if you don't want that many watts the BMF1000D are great (around 1250 watts @ 1 ohm).