If you liked Shakugan no Shana you should check out Zero no Tsukaima and Tsukuyomi ~ Moon Phase.
You might also give Magikano a try. It's a wacky story about magical girls trying to win the affections of a (seemingly) worthless non-magical boy. Nominally nothing special, but particularly amusing because they don't generally get along and so spend more time fighting each other than anything else.
