I've used Lion Brand Magic Stripes ($7 for a ball = 1 pair of socks) and Plymouth Sockotta ($9 for a ball = 1 pair of socks). Lion Brand is softer, but Sockotta contains cotton, which makes it more wearable in the warmer months. Sockotta comes in more colors, but Magic Stripes has bolder colors that seem to be more saturated. Bernat Sox is...not so great. I used about 1 1/2 balls to make a short pair of socks, but they're all synthetic, so they make my feet sweat.