I disagree with your evaluation of the techs at Ameritron. I have been dealing with Rob Hood at Ameritron for many years & he has always been more than willing to assist over the phone so the amplifier did not require shipping back to Ameritron. Before Mike Enus passed away he was the same way. Neither ever tried to just pass me off so they could do something else. I got 10 years or more of great service from my own 811H before selling it to a friend after my wife purchased me an ICOM PW-1 as my retirement gift.
That's your choice. Like they say about opinions and everybody's got one.