My current dog has severe food allergies so I'm stuck with Natural Balance for him, but I am getting another dog (not a Boxer but a dog is a dog), and I have got Taste of the Wild for him. I prefer the grain free food, which Blue Buffalo is not grian free and has quite a few grains in it.
So I'd recommend TOTW over BB.
Tyson, white, 4 years, Boxer & Thor, 2 year old GSD
Tiger and Raven, kitties, 10 and 11 years
Erin flashy fawn, Lucas, Flashy Fawn, Boxer angels, RIP 11-29-10 and 8-22-07