Well obviously I would be recommending Xpel wrap to all panels as I have had done, but as others have stated regular cleaning with high quality products designed for the job seem to have good results too.
What I like about the wrap is you know it will (mostly) protect against scuffs and small stone chips etc., and the Xpel will allegedly 'self heal' itself with only direct sunlight to soften up the wrap. That's their claim anyway. The only issue I have, and it's just me being fussy, is the two section tank wrap template, I have gotten used to it but may take up the installers offer to have the badges removed and custom one-piece wrap applied, then new badges applied. Just been enjoying riding it so much I couldn't be bothered as yet!
Given the price of these bikes I think if you are prepared to go the wrap way then it's worth it.
Oh, and I'm in South Australia, so a bit far to take your bike to the installer here!