I've purchased cameras and computers at Staples and am always very pleased with their service. Return, repairs, or exchanges have always been super easy. They have a no questions program where any issue occurs you can bring the item in and change it for one brand new, even if no longer carry that model (see store for specifics). Recommend highly!
P.S. there price match policy is very useful. I've even looked up prices online (on their computers in-store) and had them print it and match that price!