In reply to tombeasley:
I would suggest that T-Crack is not a good first 7b, it's hard and largely spoilt by having eliminate rules.
Captain Hook & Zippy's traverse have good moves but I've never been a fan of problems where the crux is avoiding dabbing the ground.
What is your preferred style of climbing?
If it's roofs / burly stuff then Mark's Roof is a good shout as you can work all the moves independently (but it's a hard 7b to have as your first). Another great roof is Made in Sheffield. It gets 7a+ in the guide but consensus seems to be putting it at more like 7b.
If you prefer technical stuff then Sean's arete at Curbar is brilliant.
Blood Falls is down to 7a+ in the latest guide as the pocket keeps getting bigger due to the soft rock.
If you have a good supply of pads and spotters and more than a T-Rex armspan then Boyager at Burb North is very soft for 7b.
A few other suggestions would be Old King Cascade (7b+ in the guide but more like 7b).
Gardoms is a good hunting ground for 7bs, with Mark's Roof, Soft on the G, Kidneystone, Perfect Day Direct, Pogle's Wood Sitter and Suavito all being class problems. Work your way along the edge till you find one that suits you and then stick with it. Or be a hero and do them all