I bought logitech G9 it's corded but I love it. I went to various stores in my neighborhood and tried various mouses till I found one that fit my hand perfectly. It was over 3x more than I had initially wanted to pay for a new mouse but it's worth it's weight in gold in the comfort as my wrist doesn't hurt anymore from prolong use.
My point is simple, go test out various mouses and find one that fits your hand. It is something you don't think about but once you find a good mouse you will enjoy it fully.
Corded is actually the best for gaming; excellent choice.