Recommend me a Microwave + inverter

Well as winter is nearly here again I’m thinking of getting a microwave + inverter as well for the truck
The reason i want to go invertor route is so i can use it for other things like ipad charging and toaster
The truck it will be going in to is first a MAN rigid TGM then possibly a TGX 26t rigid at christmas so need fitter to wire in
Budget £400 ish