I?ve also pretty much always used Yuasa in my metric bikes and always been happy.

I?ve switched back to OEM batteries in my Harleys because they seem to last the longest.

Battery tenders are a must, especially during winter months.

Some bikes inherently just eat batteries. I?ve had bikes that would run for ten years on a battery without a problem. I also have one bike that seems to need a new one every two or three years.