for best control use mdi given those choices. That way, you can eat when you want rather than have to catch the peak of a mixed insulin. Also,dose adjustment for quantity eaten is easier. There is alot of learning to do with either, to get the timing of injections correct, and then adjusting dose depending on meal size, content, activity before and after eating etc. For the very best control the best option is to pump as this gives you the flattest possible basal profile.