I haven't tried them but I do know that they are made in china. Stick with power plus nozzles from bosio. From this post: http://forums.tdiclub.com/showthread.php?t=174643&highlight=nozzles
Then again, from another poster in the same threadThey are made in China and resold by Sundiesel. Either the DSLA 150P 520 (205's) or DSLA150P502 (216's). And as for quality--well, I'll stay out of that, but the fact that Sundiesel buys them for $3.50/ea you can guess how much precision goes into making them. BTW, they will print anything you want on the nozzles, which is a big reason why you sould be careful about where nozzles are made.
So they might be good, they might not be good. For the trouble I would just stick with a known quantity.The first set of .205's I bought were from eBay, they said made in Germany on them, but after two tanks my mileage dropped drastically.
I then bought some of Smog's .205's, my mileage went up after I installed them and I've been pleased ever since.
I also bought a set of Sprint 520's (.205's) for another car, nice product, although the person I had install & pop test the nozzles informed me that one of the nozzles were bad. He replaced it with one from his own stock supply so I wouldn't have any down time. So not even the famed Bosio nozzles are free of flaws