Went ahead and pulled the trigger on the Genius 2, and an adapter so I could use the molex connector already wired up. Ordered it last night and it hit the porch before noon. Way to go Amazon! Instead of the molex adaptor I ordered, they sent another eyelet pigtail. Way to go Amazon!
The Duracell battery I got because it was the only thing available locally and I wanted to go riding, lasted all of 25 months... It won't sit more than a few days without struggling to start the bike, but it works okay. Hopefully the Noco will improve it a little, or at least keep it hot for those intermittent 50+ days we get all through the winter, then I'll order a Yuasa in the spring, like I shoulda done last time.