I was just doing some research on Crystazzi crystals vs Swarovski crystals. While on the www.cousin.com web site who distributes Crystazzi crystals listed under "products" is Swarvoski crystals. I think maybe that is the confusion? But I will say while here, for any future researchers, that the swarvoski crystals are much more sparkly than the Crystazzi.
If you're going for top of the line in crystals, Swarovski is definitely your best bet. The only thing better are the genuine gemstones. swarovski has a remarkable cut and clarity you're just not going to get anywhere else, though I will confess that Preciosa Czech comes in at an extremely close second and are considerably easier to afford. Though with FMG's new pricing on Swarovski, I can actually afford it sometimes. I'm not terribly partial to Crystazzi's crystals; their pearls, however are very lovely, and I've used them in a number of my pieces. They are holding up quite well, and have a beautiful lustre and translucency to them that sadly, the Swarovski pearls lack. But who says you have to like everything from one particular line? Use what works best for you.