Just to throw my .02 cents in here...

Had my red-top in 4 different vehicles in the past 4 years.

Each car (except my runner now) has had a bad alternator. Two of those cars had a bad voltage regulator.

3 of those cars I didn't kknow it had a bad alternator for about a week when stuff started acting *wierd*

Been over-charger BIG TIME twice now.
Im talking like 20+ volts at least.

Same battery, many problems with the cars.

It's still puttin' out 12.59 volts (fully charged is 12.6)
And puttin out about 1000 Cranking amps at 70ish degrees.

Greatest battery ever IMO.
Convinced my entire family to convert, as well as my last *lady-friend*

I'm sold on them.
Hope you are too!

-Dano-