Aladdins are great for magic and flourishing. They're great cards. They are very different from normal cards, so they take some getting used to.
If the league backs handle the same as the other vintage designs, then they are phenomenal. I love the feel of the fan backs that I have. The only reason I don't own league backs is because in my opinion they are the ugliest cards I've ever seen. That's only my opinion though.
The best thing to do is bu one of each and decide which one you like better
-Kevin