I actually did both with my DS5 last May, and while I really enjoyed both, the EMM is for a very limited audience. Early in the trip was just the two of us, so EMM was not too much money, and riding SDMT 10+ times was definitely an amazing experience for him. While that was fun, we were with a family for DAH, and it was probably the best experience I have ever had at Disney. Every ride was a walk on, and there were times when we felt we were the only ones in the park. For the whole family, I would definitely say DAH is worth the extra expense.