What brand of dog food does everyone feed?

I want to ask all you boys that feed dogs this question . do any of you save your purchase points and go to the manf. web sites and see what kind of deals they offer ? I found out that purina has the best deal going and have a heck of a program . up to 7 bucks a bag in rebates I was told , but I haven't gone and checked it out as to how reliable the info was . I do know if you save enough purina points you can get a garmin . sportmix is a big promoter of the akc hunts and I bet they have a pretty good program as well . caliber has a small program but nothing like purina .