Built In Microwave Convection Oven Should I Buy A Mini Oven Or Microwave/convection Oven?

Should i buy a mini oven or microwave/convection oven? - built in microwave convection oven

OK, here's the deal, I did well and now has a microwave oven "mini" because my main oven soo BIG Thus, when the grill only 1 piece of meat that takes a lot of time with a large amount of electricity and Clean large grill tray.

Question boils down to ... Buy a small oven to cook small meals or bake to replace my microwave for 2) to film (apart from more space, but the ovens are very expensive!
Anyone can use the ovens before? Are they reliable and easy to clean?