I mostly feed a prey model raw diet! So meat and bones from the butcher for me!
I actually find it to be way less expensive! I buy meat right from the grocery store - the same stuff I might buy for my family. But I also let friends and family members know that if they have freezer burnt meat, don't throw it out - I can feed it to my dogs! I get lots of free meat that way. I'm looking for some venison now as it's been awhile since they've had that! I do on occassion buy Natures Variety. It is more expensive but sometimes I like it just for convenience. It's easy to pop a medallion out of the freezer and it will thaw pretty quickly. When I buy NV though, I buy the big tubes then I thaw it and I press it into a mini muffin pan I have and I make my own medallions. I freeze them and then put them into a baggie and then it's easy to pop just a couple out to feed in an hour. Hope that makes sense!
Oh - and here are some of my favorite rawfeeding sites
The Many Myths of Raw Feeding RawChat : Raw Chat rawfeeding : Raw Feeding for dogs and cats!