Yarn support is the BEST part of being a designer. It is like Christmas early! My most recent batch has been Panda Silk from Crystal Palace Yarns. It is a fingering weight, 52% bamboo, 43% machine washable merino wool, 5% combed silk blend. Also, I might add, delightful to work with. This time around, I'm designing a crochet shawl in it:
It's lovely and soft, and that silk gives it a nice sheen. I've had no problems with splittiness, either, and it has excellent stitch definition. Wide range of colors. Admittedly I selected this yarn myself, specifically for this pattern, so I may be a bit biased, but I love this stuff.