In reply to Ben Harris:
Depends on how often you'll use the books or books.
The local book has a the all routes listed, and a lot of small crags probably not worth travelling the length of the country for.
NR has the main crags, and all but the more obscure (crap) routes on these crags shown. And all of the of the worst stupid sandbag grades changed. It has, in my view, better route descriptions and overall topo info. No boldering tho
If you want bouldering, get the bouldering book. There's not really another option afaik
Hopefully this is helpfull, can't really decide for you 😉