In reply to Boulderdash86:
east butress is not considered a 'proper' el cap route as it's not the same style as the south east face and south west face routes ( aid climbing, multi-day climbs...); although today, quite a few of these routes are done in a day regularly.
the easiest routes on the main faces are zdiac and lurking fear, with lurking fear having easier climbing but much worse hauling... especially the upper third of the route.
zodiac has more challenging pitches but the hauling is easy from bottom to top and it's short.
The nose and triple direct are overall harder because of the logistics involved: hauling heavy bags over low- angled rock, traversing pitches etc..
LF and zodiac have no mandatory yosemite-style freeclimbing ( like the hollowflake or the ear on salathé)
the free climbing you would do on LF is no harder than HVS/E1, a higher free climbing grade will of course allow you to do some great crackclimbing pitches.