I also have two Chevy SSR trucks which I occasionally show. There has been a lot of discussion on Optima batteries on the SSR forum.
http://www.ssrfanatic.com/foru...22094/
Bottom line is that people have had problems with them, they are expensive and all batteries are made by only 2 companies (Interstate makes Optima I think). A good Delco, Sears or Interstate battery is just fine. I replaced my 5 year old Delco with an Interstate in my yellow SSR. Optimas are good for off road vehicles because they are sealed and somewhat ruggedized but there are others that appear to be better.
My 2 cents is don't waste the extra $50-75 get a good Interstate or Sears unless you are running your EX in a demolition derby or off road.
Yellowbear