Guerlain has a lovely collection for this holiday and I picked up the Bal de Nuit quad from Neiman Marcus. I only have 1 other quad from their Fall Collection since most of their eyeshadows have so-so pigment. This one seems to have decent pigmentation, but you will be suprised to hear that the colors didn't wow me this time.
It's definitely a great neutral quad with pretty shades, but I found that I had a lot of dupes in my collection. The most unique shade is probably the bottom right chocolately color because it has just the right enough darkness to make it a gorgeous smokey unique brown, but there are definitely similar colors.
Comparisons to the following shades:
* White shimmer is very similar to Bobbi Brown Navajo Metallic
* Pink shimmer is similar to MAC Shimmertime Pigment
* Taupe shimmer is very similar to Nars Ashes to Ashes and Chanel Vega (discontinued, but very similar to Chanel Safari, see TAUPE SHADES HERE)
* Dark chocolate shimmer is similar to Bobbi Brown Java Metallic and Urban Decay Twice Baked
Holiday vs Fall Quads (two views - the flash makes these hard to photograph):
Overall thoughts: It's nice to have if you're looking for the convenience of an all-in-one neutral palette. It's wearable for year round, but not a must have for me. The collection is definitely worth checking out since there are some pretty lipsticks and the holiday ball-highlighter is really pretty too!