In reply to Sl@te Head:
Text in the Rockfax guide gives a few indicators of where the worst polish is (left end of Sella and some sections of Sierra de Toix are bad). Things more recently bolted by Rich Mayfield are good bets e.g. Echo 1.5, there are some developments at the left end of Sella (beyond Sector Final) that might suit too. There is a topo to additional crags downloadable from the Rockfax website and some topos on the Orange House website (downloadable if you register your email address).
Have a good trip.