Oh oh oh!! Definetly buts and guts-I've wanted it forever and the ups guy/Santa brougt it to me last night!! It's tough stuff but will give you great results.
Do you have "Butts and Guts"?
If so, I'd recommend doing the lower-body premix (lower body blast?) this way: start with the warm-up from the premix, then go to the ankle-weight floorwork section that focuses on the glutes (the 'hydrant' and 'donkey' moves) to preexhaust (or 'wake up') the glutes a bit. Then finish the rest of the premix. This workout 2x/week should help you get things back in shape.
(I'd also recommend some Firm workouts, like the Transfirmer "Jiggle-Free Buns" workout, or some earlier Firm workouts that contain tall-box presses).