I've ordered from both Big Cheese and Rodent Factory and was very pleased with both places. I'd say my phone experience was more pleasant with Rodent Factory, and the mice are GORGEOUS-looking--very clean. Both vaccum-pack their rodents and got my mice to me without problems. I'd say that the RF mice were cleaner and nicer-looking, but the BC mice weren't bad-looking. I've seen some F/T from PetCo, and I felt guilty feeding them to Auryn because of the poor quality. I'd order from BC or RF without hesitation! Good product, good prices, good service all around.