I need to replace a deep cycle that I use exclusively on a trolling motor. The last I purchased was a "Nautilus" NG24 from Shucks Auto Parts and it worked well for 3 or 4 years. My question is, are the higher price batteries like "Cabelas AGM", "Optima", and the like worth the extra $$? Vibration isn't much of a concern and I don't use it for cxranking.