Wait, there are jobs in Aber? 8O Best of luck with that!
In terms of riding it does depend on time available. I’d say CyB is a better full day out, solely because there are more trails to ride. It’s also a bit more technical.
NyA is brilliant fun, but nothing really challenging. Summit loop with an extra bit around Pendam reservoir is my usual loop. Good for an afternoon’s jaunt.
Truth be told though, I would take Dyfi forest every time. Climachx loop with a few extra descents thrown in, good times.
Hmm, not really the helpful answer i thought it would be.