Noticeable advantages of 6 volt golfcart batteries come in to play mostly when camping off the grid as they tend to take being drained down farther without reducing their overall longevity as much as their 12 volt counterparts. Not much advantage when camping with hook-ups, amphours are amphours and gaining the highest amount for the space available is more critical overall. It isn't just the brand or type of battery one chooses to use, of more importance is how well they will be maintained and recharged. The best battery can be killed just as quickly as a cheap battery when wiring, watering, and charging are not performed properly. We currently have a set of 4 year old Interstate 6 volt GC2 batteries from Samsclub that are holding up very well, along with monthly maintenance our onboard Iota IQ4 converter keeps them happily charged.