wontolla
Veteran
I use RUD N-perms, which seem pretty fast:
z U R' D R2 U' R D' U R' D R2 U' R D' (R')
z U' R D' R2 U R' U' D R D' R2 U R' D (R)
Another vote for RUD N-perms. They flow very nicely, specially if you do the D move with your left ring finger and the D' move with your right ring finger.