In reply to Martin Hore:
I didn't look at al the models but those I did had only one or two routes shown, so Everest has only the two 'voie normale' (via the south & north cols), missing routes such as the West Ridge, SW face, routes on the Kangshung face etc & it would have been interesting to see how these related to each other. Likewise there's only one route shown on Annapurna although there are several just on the south face.