Have a Panasonic flatbed, much more convenient than turntables.
Ours can also grill, roast and steam, but haven't used the latter yet.
Model NN-DS596B, about £300 a couple of years ago at John Lewis. Our 3rd Panasonic in about 40 years, they last well!
We also have a Panasonic - ferkin expensive, but it's our main oven and grill as well (it doesn't steam).
It's our second one, the previous one, exactly the same model, lasted seven years of almost daily use. The old one died of oven heater element failure which killed the whole machine, with no parts available to repair it.
I think the only function we've never used is something called 'chaos defrost' - I fear it may cause the end of the world as we know it........ oh....
We had an early Panasonic combination microwave in about 1987 or so, it cost a fortune, about £480, and lasted all of 3 years before its liner disintegrated. They had a known problem with them, but insisted on charging £180 for a replacement liner, and as the entire machine was built onto the liner it would have cost more than a new one to have repaired. After that and an expensive Technics cassette deck (part of the same firm) that died after 2 years, I forswore their products...
So, anything but a Panasonic, is my view. Philips used to make small ones sans turntable in about 1987, I bought loads of them for a chain of hairdressing salons I designed. I rather though they'd all be like that now, but apparently not.