Pearly Art is the newest thermoplastic that Worbla has come out with. It was very interesting to play with. It is in fact, even smoother than Black Worbla and about the same thickness as Black Worbla. I felt like it heated up as quickly as Black Worbla and cooled a bit slower. You do still need to give it a coat or two of something to achieve a super smooth surface, however, if you just prime and paint right on it, it's still relatively smooth.
Another cool thing with Pearly Art is that if you are making something that is already white, you don't have to do anything to it (same thing goes for the black worbla)! I used it to make the wings on the accessories and the staff for my Sailor Cosmos cosplay. It did, however, pick up some of the lint so I had to give it a good wipe afterward. It also still has a slight grainy feel to it once it was fully heated but you can't really tell unless you are looking super up close.
Overall, I would recommend using white worbla for smaller pieces and/or for fine detail. It does fuse together nicely with itself with little to no blemishes. I haven't tried using it in combination with the other thermoplastics but if it works like the previous Worblas, it'll bond just as nicely.
I personally don't think I would use the white worbla for most of my projects if only because its more expensive than the black worbla. Yes it's only a few bucks ($3) more than the black but when you are on a tight budget, you save where you can. I will, however, keep using it for smaller details and maybe even use it to sculpt small pieces.
Have you used any of the Worblas? What are your thoughts on it? Do you like one more than the other? Let me know in the comments below! I'd love to hear other peoples opinions!
~Serenity
P.S. I will be writing up a blog with my personal opinions on all the thermoplastics out there (I think I've tried just about all of them). So keep checking back!