In reply to Deema Mozayen:
Afraid I cant help with a comparison, but I've just come back from a trip to the Picos and used the Rocha Verde one which I thought was very good, excellent descriptions, topos ect. Very up to date with an absolute ton of crags. Quite a weighty tome as its dual language.
This seemed to be the one most used by other climbers (almost all Spanish) at the crags we visited.