I used the bands for the first time today with speed box squats. They ruled. Their rigidity was perfect, so I'm glad I got the 5's. The session went by slowly because I kept messing with the set-up, but I finally figured out to anchor them down with the safety bars set on the lowest holes.
Afterwards, I did good mornings for 215 x 8 (3 sets) and some ab work before finishing off with the Crush grippers.