Yeah good point Sofatester, I think people on here get too hung up on the centres, I ride them and enjoy them all myself, also love wild stuff round Snowdonia and will be heading out to my local trails with a bunch of mates in an hour or so…really spoilt with how much stuff we have on our doorsteps in Wales.,
If I had to rank them it would be CYB or Penmachno for a day ride, just because there's more to CYB it edges Penmachno, then the Marin and Llandegla both of which we tend to do as evening/night rides cos they are a bit shorter.
CYB has great trails and good facilities can't see how you wouldn't enjoy it unless you set out with the intention not to!