Ranger,

This doesn't help with the turntable problem, but since you're on the
subject of microwaves, ....

I have a Panasonic that I got specifically because it has true power
settings, not full power that goes on and off. At the 5 setting, it's
on half power all the time, not full power half the time.

I'm not touting any particular brand, but the true power setting works
much better IMHO.

I believe the commercial type microwave in the lunchroom at work does
not have a turntable. But it doesn't have power settings, just super
high. I'm on vacation right now, but may stop in at work during the
next week. If my memory is working that day, I'll try to remember to
check the microwave there and get you a company name and model number.
If it will keep peace in your house, maybe try commercial kitchen
suppliers for a microwave without a turntable.

I know there are professional chefs out there in this n.g. Any
suggestions?

Ken