Today I replaced the Optima Red top battery in my Speedster. I did a very little research to decide on a replacement but the old one gave me perfect service for 8 1/2 years and over 22,500 miles so it made sense to stick with the Optima. Price wise it was $175. 8 1/2 years ago and $219. for the replacement---a 25% increase which seems a little stiff but hey---it's for the Speedster---right? The other top rated choices were about $169.