UPDATE:
I'm very happy with this amp.
I've been running this with the Radioddity QT60 Pro because of the sound quality and the vfo mode, and have had nothing but great results. This amp will cruise along, giving an easy 600 watts pep on sideband all day long and this is running it conservatively.
I don't do anything on AM but if/when I do, I'll set the dk of the amp at 100 watts. (25 per pill).
On-air reports have all been great and the only adjustment I made to the radio was turning down the mic gain a little.
The stock fan runs all the time and was loud. I swapped it out with a quiet fan and added a small quiet fan to the rear vents to compensate. No issues with heat, even after a busy Saturday of dx.
73