Call it what you will, but for every 2 bad things said about Hifonics I hear 2 good things about them, No one has told me that they are terribly over rated and I just stepped up from a Kole 5500 watt amp. So I would say that I am doing good. I am not knocking anyone's ideas as I am sure the other brands are great amps, but I already have 2 hifonics amps and I don't want to mix and match so I will run with Hifonics. I have seen my share of people using Hifonics with BTL's and other subs and I am pretty sure they do way better than my old Kole amp. lol so I think I will be straight, and by the way that Kole was pushing that 18" BL pretty good.