I’ve never been to Llandegla but would love to because I’m a bit of jumps and berms. Gisburn HAS to be the best trail centre though because there’s just so much variety, freeride park for jumps, berm baby berm and the lower blue runs for flow, plus plenty of rockiness for more natural feeling trails.
As a centre, Afan/Glyncorrwg used to be my favourite. Penhydd, Y Wal, Whites level, W2, Whites climb & Skyline descent. Now a shadow of its former self. CYB & Llandegla are both awesome, loved Dalbeattie and hated Kirroughtree (maybe due to a lack of fitness at the time). Cwmcarn is my local but is only fun when you’re pretty fit due to the painful climb.