I don't have the LE Catherine Deneuve Buffer Brush, but I do have the regular MAC 182 Buffer brush. Same thing, just different collections/packaging. I had heard so many rave reviews for this product, but couldn't plop down almost $50 *gulp* for this brush. Finally, I decided I would take the plunge. I wish I had done so sooner. I thought I had already achieved my HG "flawless face" look. I usually just use LM tinted moisturizer and BE mineral veil... I used to use SK's powder brush and sort of "buffed" it in myself. MAC's brush makes all the difference. I COULDN'T BELIEVE MY EYES!!!!! If you don't have this brush, you need to do yourself a favor and buy it!!!! It is the best investment that I've made as far as brushes go. GO! RUN!! :) One downside, the packaging. You would think it would come in its own little case or something like that. I'd love to be able to take this with me everywhere, but I can't because it comes wrapped in some flimsy paper in a flimsy plastic thing.