Mikl... read your and Neils comments on Albino thread... does look kind of epic.
Simon... Ive done Iron Curtain (to the start of ST) a few years back. Recall it was great. Main reason Im thinking of having a look at Nitro.
As for the best route I would have thought Siblings has the cult status. Ive done first 4 pitches before traversing off (into reason of man I think)... its good. Plan to have a look at top pitches this time round... they get most of the press. Not much written about overture to sun but Im thinking it might be quite awesome too... bit harder again. Bit hard for me this trip but siblings probably will be too. Evolution is excellent. Sustained great climbing mostly 22-24. Very user friendly. Probably the only bit on the whole route that links more than 1 piece of natural is the crux. Not of course that sports is the be all and end all.
I guess the other one thats hard to go past is Strangness and Charm... shorter, south walls the main event, but pretty nice and the most commonly climbed (perhaps).