I have become a big fan of Veera Valimaki's "Secret of Change" pattern and have made 9 or 10 of these wonderful shawls! I have made it in solid colors but my favorite yarns to use are those with long color repeats. Noro yarns have worked best, and I've also used a couple of the acrylic "cake" yarns with good results, but I am interested in knowing about other long color repeat yarns out that I might not have heard about nor seen.
I'd love to hear some suggestions. And the yarns with more colors in a skein work especially well.
Try looking at Yarn Paradise (Ice Yarns). They have a lot of yarns to choose from and their quality is good. Fast shipping. I find that they are quite reasonable, even after I add in shipping, the yarns are cheaper than I can buy locally for the same quality.