I recently ordered from Big Cheese and with their flat rate shipping, it was less expensive than Layne Labs. Since I am in CA, I'd also have to pay sales tax on top of their shipping charge, so Big Cheese it was. The shipment arrived in 5 days from the time I ordered and there was still plenty of dry ice in the box to keep everything frozen.

Layne Labs was at the Pomona reptile show this weekend and their quality seemed to be on par with Big Cheese.