LiveAquaria (aka Drs Fosters and Smith) can't be beat for online orders. 14 day return policy on livestock, no questions asked (well, they ask, but never refuse a refund or re-order). Customer service is unbelievable - they bend over backwards to accomodate the customer. I'm sometimes hard-pressed to get that level of help and warmth from some of the LFS' around here. Also, prices are as low as I've seen out there.
If you are doing a group order through them, PM me, as I'll contribute and split the $35 shipping cost.