I make my own yoghurt, too, but on the stove top. I make it in a 2 litre jar and then store it in the fridge, decanting into something smaller and saving the mother. I also make up breakfast pots which I sell at the market.
I have thought about getting a maker, but when I consider my shortage of storage space and the extra washing up, then I desist.
Nothing better than homemad yoghurt, though!