ST1100Y
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Skeptical about the LiFePO4 in the beginning, I went with NOCO last year (ST1100 & the GF's NT700VA, via Amazon actually cheaper the the classical OEM YUASA) and I'm highly impressed with them.The NOCO units seem to be a good choice and Walmart has them.
They do require a designated charger though, but already the GENIOUS 5 manages to charge an empty cell within 45 minutes (compare that to the charging times of regular AGM or GEL batteries...)
The BMS is also officially compatible with their GB** booster packs, so an eventual springtime issue is covered as well...
I'm also impressed with the solid plastic spacers they offer (contrary to the soft foam thingies other MFG's include...)
Whilst fitment was a simple drop in on my GF's NT700VA, installation in the ST1100 required some modifications of the unique solid brass(!) terminals...
Some cutting, a little filing, drilling an tapping a new M6 thread to make it fully compatible to the ST1100's connectors and it's rock solid now...