When the OE battery on my Ducati gave up the ghost after 9 years, always on the Optimate, I took the opportunity to rearrange things under the tank for a larger battery. I fitted a quality AGM battery with 50% greater amp/hour capacity and again it is always on the Optimate when in the garage. That was in 2010 and it's still giving sterling service.
Two lessons to be learned from this. You generally get what you pay for and a quality battery tender like an Optimate will pay dividends because they do what it says on the tin.
Whilst it may be very tempting to go the Life PO4 route when looking for a new battery I would only do so if they were OE specified. Purely because if they aren't the electrical infrastructure on your machine may not be up to handling the current these things can deliver.