I live alone, and use a Remoska most of the time. The main drawback is that there is no way of setting the temperature, so it takes a bit of getting used to. I keep an index notebook to record timings the first time I cook something. Most dishes take about the same time as a standard oven, jacket spuds are quicker. We had a thread on this subject some time ago, and it seemed to me that Halogen ovens were also popular. I will have a search and add a link if I find the discussion.
I hope you find something suitable, it will save you a fortune!