MTII is the best, I went from a type 1 to dark. I could only burn before using it, maybe 20-30 min. outside and I'd be burned. Now I can swim for 2 hours and just get darker.
So far I've been on it for about 17 months with no sides other than the woody's.
I'm outside enough that I don't usually need any help. But if I do, I go to a very high-end tanning bed that has the purple 0.5% burning rays. Expensive, but worth it.