I'm running 2- 10w7's and 2 component sets off of my Hifonics amps without issue. I had the same problems here as many of you have experienced, everyone has name changed, merged, or been taken over and the quality control or sheer attention to a reliable product has diminished. Hands down back in my install days things were very different.
All that said, I have had this system up and running for 2 years now and have yet to be failed by the amps. I've run them pretty hard and have no complaints considering pricing and lack of options if you don't want to spend an arm and a leg.