Here’s one unpublished fave route at Gogarth to whet your appetite:

Sign of the Sun Dog E5 60m.
A wandering and varied route up the very right arête of the Yellow Wall, Scary, technical and strenuous.
1 40m. 6a. Follow 93,000,000 Miles to the first peg. Step up and go right onto the flying arête, second peg and small wires. Make weird moves up and run it out in space to a ledge and peg belay, on 93,000,000 Miles.
2 20m. 6b. Move up and clip the pegs on 93,000,000 Miles and come back down. Make a hard traverse right under a roof and gain a huge flake (like a mirror image of Schittlegruber). Go up the flake to a horror niche, then right again to finish on the arête with much exposure.
Paul Pritchard, Leigh McGinley (AL), Tom Leppert. (17th & 18th of July, 1996 - one bivvy in Llanberis).