I bought a RedTop for my Afletta GT in 1996 when I bought it. My son replaced it in 2013. It's my record so far. Silver medal goes to my OEM 2008 Smart battery (Varta) which I replaced last year.
Honorable mention goes to my BMW F650 Yausa battery that lasted 5 years despite my running it completely dry twice.
IMO, Optimas are worth the extra money in a vehicle you plan to keep. I had intended to buy one, and the billet aluminum holder Summit sells, when I did my battery relocation last year, but I got in a hurry and just went with the battery I had and a plastic battery box from the marine store instead.