My inbuilt microwave grill is gone after 10 years and I am having difficulties choosing a reliable make. I thought of upgrading to a Combi microwave but am not sure which would work best. I have a 45.5cm height gap which is fine, but most good makes require a 3.6kw connection which is above what I currently have. Do you have any advice on good reliable combi microwaves and how easy or difficult it would be for an electrician to fit it properly and "upgrade" so all would work fine? Please help!