The 360 is a mixed bag - inevitably plenty of good stuff (it’s in Wales), but I can’t help thinking it wasn’t entirely produced by motorcyclists!
Here’s a link to Welsh roads that I consider ‘must ride’ routes. As I’ve had to string a boat load together, you’ll have to take account of the fact that there are a few ‘transfer’ sections that are merely linking the good stuff together (but very little really), and a bit near Brecon that loops over Llangorse - it’s pleasant enough, but keeps you off a boring bit of A40 dual carriageway.
It stops where it stops so you can say you’ve been to Llanfairpwllgwyngyllgogerychwyrndrobwyllllantisilliogogogoch.
Please bear in mind that I’m more a reprobate scratcher than a goat track man, so there’s plenty of that stuff left to consider. Also, my suggestions are not exhaustive or intended to be definitive. There’s some lovely stuff around Builth Wells for instance. In fact, I don’t really want other people to use them, so keep ‘em under your hat, eh?
https://www.myrouteapp.com/en/social/route/4874956?mode=share