I'm thinking about purchasing a new battery for my 2009 GSX1300RK9. I generally use my bike for sport touring, heavy on the touring. I ride roughly 25,000 miles per year, and have a Garmin Zumo 665 and a Scalarider G4 communicator. Everything else is bone-stock. Which battery should I use? I am interested in a lighter weight and smaller battery, but I also would like having a bit more power. Any thoughts?