My opinion is that it seems many people seem to be giving these Cyclop balls a chance, likely largely because they are endorsed and sold by Diamond Billiards, which many feel makes the best professional quality pool table available right now, because they currently endorse and are used in a number of pro tournaments, and the price - which puts them in line (but slightly less than) other more proven top quality balls - Aramith Pro, Aramith Tournament and Brunswick Centennials. I'd love to hear more testimonials from pro players who have used them before I'd consider purchasing a set over any of the other tried and true top quality options, but without having tried them, I can't give an opinion.
Some of my Cyclops balls have little chips out. I've never seen that before with any other ball. None have flown off the table or been abused. I won't be buying more.