I like working with cotton the most. I also like to work with cotton/acrylic blends (most 50/50 or 60/40) and bamboo blends.|
I am allergic to wool (though I did play around with felting), not to mention we have a moth infestation no matter what I do or how I clean (we probably bring the moths back from the shop with produce) so I don't work with wool.
Recently I tried knitting alpaca, and boy, was it silky! But the hairs were pretty annoying when they separated from the yarn, so... I am sticking to cotton. And bamboo.
Seriously, bamboo yarn feels like silk. I am loving it.