I've got the 2nd and 3rd :p, I tried the first mvt, so I did about 2 pages of that! The second mvt is easier, but still, its quite difficult. I haven't looked at the 3rd mvt yet. For the 3rd the 1st is ok until the fast part ;) second isn't so bad.
Ye I like the rach preludes, ive done 3 so...