WalMart has a #27 for $102. It has 810 CCA and a five year replacement (not prorated) warranty. They are made in USA (I think by A.O.Smith in Wisconsin). That's where I get mine. Bring in an old core to avoid the fee.
Here's the spec's:
Battery Type: Lead Acid
Model No.: MAXX-27
Shipping Weight (in pounds): 50.3
Product in Inches (L x W x H): 12.0 x 6.8 x 8.9
Walmart No.: 551472479