I started out using Layne Labs too but they're shipping charges are way too expensive. Perfect Prey is my preferred feeder supplier. Their prices, feeder quality, and packaging are all top notch. My only issue with them is they don't sell rabbits which I'll eventually need for some of my larger critters. Big Cheese is great too but they're often out of the feeder sizes that I need the most. I'm not a fan of Rodent Pro at all. The few times I ordered from them the feeders were soiled and smelly.