Collage has great customer service, cheaper shipping, a good guarantee on products, a good replacement policy (if a DVD comes scratched, and you want a replacement, they don't give you a hard time, AND they send you a $3 discount coupon with the replacement---no matter how many times they send a replacement: I once had a Body Pump video that had a few glitches, and several of the replacements also had glitches. They never gave me a hard time about replacing them, and sent me a $3-off coupon with each replacement!).
They also allow a certain number of returns if you try a workout and don't like it (I've used that with a Stott pilates workout I previewed and didn't like).