Tenecor is your best bet for acrylic tanks. They are distributed by a lot of different companies now, but the prices don't vary much. Markup on tanks isn't great so our mutual friend might have the best price after all. If it doesn't need to be a tank check out the poly tanks at Behlen Country. They have a 9 ft diameter 1000 gallon and they have distributors on the north shore. Not bad for $300.