Are you planning on using them for starting or house batteries.
IF you are planning on using 'em for starting please tell me where you found 'em as I need to replace my chassis battery.
IF you want to use them as house batteries.. The question is a good one.. I am told G-31 is the most likely to need warranty adjustment of all battery types. What I do not know is if the person was talking through his hat or not (Telling a falsehood). I do knwo the G-31 AGM's I had.. Not so good.
Also I prefer DEEP CYCLE for house,, Marine/Deep cycle are starting batteries first and foremost and really are not all that good at Deep Cycle use.