While in the past, bottles were superior to cans, these days brewers have optimized their materials such that cans no longer impart a metallic taste. In addition, cans protect beer from the sun more efficiently, and are therefore less susceptible to skunking. While there may be nothing more satisfying than the pop of a freshly-opened bottle of beer, they're technically no longer the optimal beer medium; at the very least, you don't need to worry about cans included in your shipment.