In reply to Clauso: You WILL struggle to set up a belay on 50s if you do Cemetary Gates for example (lower than main section of that face), Byzantium (Dorys) was surprisingly long with belay set back a bit, I'm not sure how I would have got on on 50s here, I think you'd make it to the 'ledge' area you can scramble to at the Barbarian abseil but no lower and down-climbing the last section wouldn't be much fun if damp / dark.
I've done virtually nothing on Main Cliff at Gogarth nor have I climbed at every single crag in North Wales so there's every chance there's situations where 50s might be deal breakers. Quite a few experienced folk wouldn't be without 60s in N Wales. I'd like to make an informed decision.
So no, in short, this isn't a troll.