One of my absolute favourites of all time is Sprouting. Such a nice fit, cables aren't very stressful but are enough to not be boring, works with solid to moderately variegated yarns.
Another one I come back to, since I have a proclivity for neon-technocolour-short-dye-repeat yarns, is Crusoe. It seems to have the magical ability to tame even the most stubborn pooling and highlight all the pretty colours in a skein that has all the pretty colours, if you know what I mean.