I think most are happy with it. Though I do want to see some power tests where clipping is measured. Most people are just clamping away on their Audiopipes, but I don't know if the output is clean because I have seen some claims of like 5500 watts from the AP3000 on 16V or something like that and I just have my doubts. Probably only 2500-3000 of it usable (unclipped).
I am getting my hands on some and will test them, I am also looking into beefing them up with better parts for when they all start breaking maybe I can sell an upgrade for them to do way more than rated power, albeit not necessarily reliably, but if it only costs a few more $$$ those chinese factories won't spend it on the amps, but the owners of the junk might.