I decided to try all three of them, and I have a clear winner.
Here's the three boxes, in no particular order.
Vanity Trove was the first to arrive. I had preselected my samples, so it wasn't as much a surprise, but nonetheless exciting!! The box looked very posh and the samples were quite literally sample sized. Since everything in the box was chosen by me, I know I would use them all. The brands are average, and the variety is also just okay.
Then came the Bellabox, in a cuter but smaller box. I was a bit irritated that I couldn't order just a single box, but had to take a subscription of minimum three months. I really just wanted to try it, but I signed up for it anyway. I was not so impressed by their April box, it was quite ordinary, however the May box was way better with some products that I could use, and it also had a few products which were almost regular sized. I loved the Style Aromatherapy Anti Dandruff Hair Moisturizer and the Nip +Fab Stilleto Fix. Both were very generously sized, and it somehow made the whole box very much worth it.
After a bit of waiting, StyleXStyle finally launched the The Little Black Beauty Box, and I immediately got my hands on the June box! I was in for a pleasant surprise. In association with Tangs, the box packed in a bunch of high profile brands, and I fell in love with it!
Laneige, belif, Sulwhasoo, Clarins, Shisheido, Michael Korrs, Aveda, Origin, Benefit plus others, all in one black box! This box was my favorite among the three, and I have already ordered the July box. I am yet to try the new products, but boy I can't wait!