In reply to A Nidderdale boulderer.:
> So Crookrise has better rock quality.
I don't really see that. Theyre both grit, with good bits and bad bits
> One thing that strikes me is that Stanage is convenient where as Crookrise you have to want to go there.
Irrelevant, you said in your OP this debate was "about quality of the rock and climbing".
They're different routes, I'd argue the stanage one looks to be a better line. The climbing on that slab at Crookrise has really nice moves but tends to feel a bit contrived in places and it trends into grass at the top (also, with a VS 5a you're already into the realms of esoteric - what kind of a classic grade is that!?).
According to my logbook I didn't enjoy Hargreaves, but I can't remember doing it anyway, whereas I do remember something about at least 3 routes on that Crookrise slab which might be telling.
In my memory this
http://www.ukclimbing.com/images/dbpage.php?id=5973 is an absolute belter of a slab at Stanage at the same grade, I'd say better than the one you show at Crookrise, really nice climbing, good but well spaced gear and a really pure line.