I have an 'all in one' kind of thing, where you can remove the blender and add the food processor attachment. No problems and it's done the job well so far.
However, I have just invested in a rather lovely bread maker, which I now use to make my pizza dough, and I can't recommend them highly enough.
My food processor/blender is just your bog standard one, nothing fancy, but I use it for smoothies every single morning, and soups..
http://www.argos.co.uk/static/Product/partNumber/9020201.htm