Wanted to know whats the best Agm battery for 02 trailblazer LS when I purchased my truck i purchased a red top optima in 2009 and I'm in need of a new one but haven't read much good about current optima batteries so are they now junk?if so whats the best AGM available now ?i intended on going with the yellow top because of stereo but not sure now.if the optimas are still good would the 34/78 yellow top work for my truck ?sorry trying to include as much info and questions in initial post as I can think of. Any suggestions would be appreciated. Thanks