More info is google "Top 10 battery maintainers." This can help with research. Then consider what's on top on most of these articles.
The Battey Minder looks pretty good based on their website and sellers. Not much in any of these articles though. I would not mind trying Battery Minder, but only after my Battery Tender wears out. Im on a Repro Mopar agm batt by Turbostart I have owned since 2010 and battery is doing great on the Tender.
Only other charger I like is my Ctek that I use on my generator. It has a selector for the smaller M/C batt. My generator has a wet cell unit and so far that batt is 6 yrs old.