I'm the black sheep here, I like the powermaster, got 31 years-174k out of it with 3 accumulator balls. It started blowing fuses over a couple of months. Change and would go a day, then 2 weeks, you get the idea.
Thought about vacuum and decided to stick with oem. Sent it out to Richard Clark the end of 11-18 and his guy Peter actually did the work. Motor was burned out so he put new windings in it, did all the tests and since the accumulator was starting to get weak replaced that too. Could of done an exchange but mine looked almost like new and wanted that one back.
Richard always called back, even at 10pm to let me know what was up and Pete sent pictures of the motor, etc to show what was wrong. Sent me a copy of the return shipping information so I could track since it needed a signature. And he likes to talk almost as much as me and he's a fun guy to speak with. I can see someday he'll be riding on dashboards all over the country after he gets sainthood!
Oh yeah, the brakes work awesome.