we tried i think 2 or 3 vendors and settled on rodentpro - arrived consistently frozen and stayed that way until we got home from work (even in the midst of summer). Don't be floored by the shipping - it'll get ya whoever you choose but overnight will do that across the board. I liked how they had the shopping cart feature that let you see what % of the shipping container you had filled so you could maximize your order for that shipping rate.