You are LESS likely to end up with onion-skin thick plates if you choose golf car batteries. Note the word, less.
Compare brands, the heavier the battery AND AND AND not gaining ampere hour capacity in relationship to the difference in weight is a clue that the battery has heavier plates which you want. Many so-called deep cycle AGM batteries have .060" thick plates - that is a cruel joke.
"Old Timers" who report success with many years of good service have to remember this is not 2005, or whatever. The quality of batteries has degraded. The Optima battery of 2000 is not the Optima battery of 2014. Keep this in mind for ALL batteries, flooded or VRB.
Manufacturers who refuse to divulge plate thickness are crooks, plain and simple. There is not a reason on the face of the earth to with hold basic battery specifications, Plate paste compounding, grid alloys and other information is eligible for proprietary secrecy - not positive plate thickness. And I do not give a damn which company decides to slimeball withhold plate thickness - it is as bad as a sign as a taxi driver who refuses to tell a patron how much a ride is going to cost until they arrive. The federal trade commission is a joke, and should be dissolved and executives fired.
Grrrr....