battery replacement?
I have an Optima yellow top in my C5. No complaints. I had one die on me a few years back, due to not being driven, but it was still under warranty and replaced at no cost. After replacing that particular battery, I purchased a CTEK battery tender. No complaints, no issues. It gets connected and turned on any time the car will not be driven for more than a few days. I've been doing this routine for two and a half years now. Nice thing about the CTEK is that it is pretty much a "fire and forget" kind of product. By that I mean that once you set it to the correct mode for your battery, it will say in that mode following a temporary power loss.
In the end, the battery choice is yours. I've got both brands/types that you are asking about. You can't go wrong with either of them, IMHO. I do recommend a battery tender of some type, for those times that your Corvette will be sitting idle of a few days (or more).





Another alternative it to put the battery on a high quality purpose built battery tender that keeps the battery fully charged and only charges it when it’s needed.
Get the free replacement battery and enjoy the extra cash that’s still in your pocket.
The secret to your battery being able to sit for a month+ and still being able to crank the engine is having a battery with the proper RESERVE CAPACITY & the BCM not consuming more than the designed 20 milliamps when the electrical system is in the SLEEP/SECURITY MODE.
Bill



