I bought this as it had a score of 77% in the Which reviews, and also it was significantly cheaper than the other microwaves with the grill function. It was to replace a very basic microwave I bought in 1995(!!) that had just stopped working properly. The grill is very good - it will cook a steak very nicely, and you can use it together with the microwave function to cook crispy baked potatoes (previously they were always a bit soggy and I used to get lots of condensation in the machine). General heating of food is very efficient and it heats food evenly. It is bigger than I thought it would be, and needs alot of space around it, which could be a disadvantage if you don't have much space, or you want to put it under a shelf etc. It meeds 20cm (8in) above, 10cm (4in) behind and 10 cm to each side, plus it needs to be 85cm above the floor. This is not made clear on many of the websites selling this model. Also you have to be a little careful when setting it as it is easy to overshoot with the timing, though this is a minor issue.
Generally this does what it says on the tin and is very good value for money. It even has a self cleaning function - though I haven't used that yet and it is easy to wipe round. It is also relatively quiet, and it reminds you if you haven't removed the food with a quick beep every minute or so. I don't know how it is with defrosting as I haven't done this yet, though again the Which reviews are positive. It will cook at 900watts or 650 watts, and is easy to get to grips with the controls. The instructions are comprehensive and give you the wattage and timing for lots of different types of foods and liquids. So far nothing has boiled over etc!!
All in all a great machine plus it is good looking and easy to keep clean on the outside.