Shoe fit question
So I'm playing a lot more tennis and going to get a pair a good tennis shoes. I have a question about the fit. I'm trying the Adidas Barricade 6's, cause they are on sale, and they fit good. I have pair of 13 and a pair of 13.5. The 13's fit but are a bit tighter then the 13.5's. My toe is about 1/2 inch from the end of the 13's. It's just that the 13.5 feel a bit more "comfortable" like running shoes. My concern is that after they break in, my foot will be sliding around in the 13.5's. Is this correct? Should the shoe be a bit more on the "fitted" side?