Personally, I agree. I always loved the game and still do and was quite surprised to hear anything negative of it. But I've still always regarded SMB3 as my favorite, even though SMW provides such a greater degree of freedom and exploration than had been seen in its predecessors. But I actually liked Yoshi's Island a lot as well. I don't think beating it is frustrating. Trying to get 100 on every level... that's frustrating, especially in terms of stars, since one little mistake will knock you down a peg.