Type 1. You get it at a younger age and your blood sugar can get extremely high much faster and easier. Getting it at a younger age means more time for your body to suffer from too much sugar in the bloodstream. Type 2 diabetics still produce insulin (just not enough). Type 1 diabetics don't produce any. Plus, type 2 diabetes is commonly caused by the individual who has it (not always). This is due to being overweight.
Well, I say type 1 is worse cause this girl across the street from me has it, and her brother has type 2 and she suffers more.
But really, I'm not so sure. I'm not an expert.