I used Helen's Lace to knit Jane Sowerby's Shawl, Persimmon, from Knitters Magazine. It was my first true lace project and I was delighted with it. The yarn was great although it can split, I really didn't have any trouble. I was able to unravel it when I made a mistake which was great. Sometimes you can't really do that. I loved it so much I ordered it in the Robot Overlord color without choosing the actual project yet. I highly recommend it.
I own Many capital M of the addi lace needles. I love them, even more than my regular needles. I have found that the coating on them makes them less slick and for me that is a major plus. The point are very pointy, so if you have very sensitive fingertips you might not enjoy them. For lace they are especially unbeatable. For socks, I use the Magic Loop method, in the 40inch length. They are perfect.