They used to have good warranty and good price. Now at least for my size (51-R) the Everstart Maxx is more expensive and shorter warranty than AAA road side service if you have AAA membership. AAA: 6 year warranty, $102.95 + $7 battery recycle fee. They told me I can keep the old battery and they won't waive the fee, so I kept it and return it to O'Reilly for a $5 gift card. Walmart: 5 year warranty, $109.95, you have to return the old battery for a core charge. Walmart is a bit of a drive for me, plus the always long line. AAA came after a 35 min wait and they test out your charging system with a tester. Both batteries seem to be Johnson Control, and has 3 years non prorated warranty, probably are identical. The charging system test is probably what reduced their risks for the 6 year instead of 5 year warranty.