Review (4/5): Not bad, but not the best
First, I bought these knowing the "full" nail designs were tiny, and boy, are they tiny! 1/4" by 9/16" or just under 1 cm by 1.4 cm, so I bought this for some of the cute and pretty individual designs.
I haven't tried them all, but some of the designs seem to not be etched very deeply, and are really very tricky to use. So, unless I got a bum set, I wouldn't recommend this as a starter set. The peacock on BM15 is a good example - I tried it with several polishes and both my Konad and Salon Express stampers (each pick up and release designs differently) and I only got a decent image once out of about 15 attempts, even with polishes I've used successfully with other intricate designs.
Overall, this has some very interesting designs, from cute to sophisticated, although a few designs seem pointless because it's hard to tell what they are. I think a couple of them are supposed to be flames?? Otherwise, the styles range from cute or funny to elegant, and some would look good as a single stamp on a nail or repeated in a pattern all over. Some of the "full" designs could be used partially for a nice design (only fill part of the design with polish and/or wipe the rest of the unwanted part of the design off the stamp with a q-tip or stick) so these are pretty versatile. While not all are etched very deeply, the design edges are crisp and clean and have nice detail.
There are better sets out there, but if you have some experience with stamping and patience, then you'll probably want to add this to your collection for some of the unusual designs. If you're just getting started, I recommend the Cheeky Summer 2012 plates, which have bigger full nail designs and are etched deeply.