Deja Vu thread.
I had an AGM in my 1999 Softail that lasted 13 years. But it was a "branded" Harley AGM battery. Small lettering on the bottom indicated it was really a Yuasa. Still, to me that was pretty darn amazing. I retired it because I kinda could tell it was tasking itself starting the big twin. Still use it as a shop battery. Only one closer was also a Yuasa AGM (branded as a Polaris battery) in my Ural.
In a thread here last week I learned you can fill your own AGM which is something I never knew. Or really want to do anyway.
WOW, you've got a lot of bikes! Cool.