I needed a new microwave late last year, and debated the same question - I also live in AZ, so don't like the oven heat in the summer either. I ended up getting a Galanz Microwave/air fryer/convection oven about 6 months ago that lets you do pretty much everything. It doesn't have a "toaster" feature specifically, but you could probably do it with the roast or air fryer function. I usually just use my toaster for that. Pretty much anything else I want to do can be done in it. The downside is it must be cleaned after air frying every time if there's a lot of splatter - usually with chicken wings (my favorite). The basket is kind of shallow for the air fryer, but still works great, and you can roast, bake, make a steak, and use microwave/convection combo cooking (nice for baked potatoes). I really like it and it's great for reducing the heat in the kitchen or having a 2nd oven when needed.
It has several programmed functions for specific things like baked or roasted potatoes, fries, chicken wings or legs, roast, cakes, etc. I just google for methods to cook other foods with the air-fryer or convection when I need to know times or info.
It's a bit loud when running, and needs to have a few inches of clearance around it. Also the first one I had made a loud grinding noise with the microwave after a couple of uses, so I replaced it and I haven't had any problems at all with the new one. They were very quick at getting the replacement to me.
It comes in 2 sizes and takes up similar space to a microwave, but it takes the place of a couple of appliances, so I don't mind the space. Here's a link to one on Amazon:
https://www.amazon.com/Galanz-GSWWA16S1SA10-Microwave-Convection-Combi-Speed/dp/B0859JB6KW
ETA: It's great for heating up pizza, comes out nice and crispy, no more soggy leftover pizza for me. lol