I had a Panasonic combination microwave 20 years ago but when we moved 9 years ago it was too big.  Bought a small microwave but when it broke I discovered the slimline combination so took the plunge .  I am still getting used to it but I have only used my main oven a couple of times which is great.   The instructions are easy with a clear display unit.  The microwave is quicker than my old one and there is less smell when food is cooking. Must be saving electricity.