Battery Choices?

Most automotive batteries made in America are manufactured by one of two companies: Johnson Controls or Exide Technologies. Interstate, DieHard, Optima, etc are all made by Johnson Controls. Wal-Mart batteries, Johnson Controls. At this point, it comes down to price and warranty.
Costco use to sell Kirkland batteries, which were very good and inexpensive. Now they sell Interstate. I took a Interstate battery back to them, and it cost me $3.00. No questions asked. From what I have heard Wal-Mart, and some of the chain stores (Autozone, Oreillys,etc) have great replacement warranties. I have been going with Costco, and their Interstate batteries.