I've sniffed all of them at one point or another. (Although I still need to sample the newest in the line) I own Honey and the Moon and Contemplation. I also have a solid perfume: Marine Sell.
I like this line because the scents are unique and cheap. Occasionally, I get a strong synthetic note in some of the fragrances that just make me ill. Contemplation is actually one of them. I liked it at first, but then after a few minutes....blech.
I don't remember La Petit. But Let Them Eat Cake is a fun, sweet, vanilla pastry scent. For the money, if you find one you like they are worth buying, imo. They also have soaps, bath gels, lotions, lip balm, etc. It's a fun line, with clever packaging.
In my fragrance wardrobe, I have my "serious" "I-really-love-these" "classic" perfumes (Guerlain, Chanel, MDCI, Amouage...) But I like to fill in with frivolous, fun, and unique scents that are cheap and still well done. I find Tokyo Milk is a good option for that.