You can't beat the Malabrigo colors.
Spun to a typical sock weight, this 100% merino wool yarn (please note that it has no nylon in it) is plied to provide more durability suited to that needed for socks. But don't let the yarn's name pigeon hole it for socks! It is great for shawls, wristlets and scarves too.
And if you aren't discouraged by the idea of knitting a sweater at this gauge, what a great yarn for a fine knit sweater!
We also stock the Rios worsted, Mecha bulky, Rasta chunky and Arroyo sock weights which you can access thru the "Other Malabrigo Yarns" link above.