There's nothing quite like Koigu for kid's sweaters. The Boy choose p900, in variegated shades of rusty oranges and blues for his "Back to School Sweater"--finally finished in March (7 months late!) after a few false starts on the sleeves (see notes on our Ravelry Project Page).
We love the 3 x 1 rib and textured stitch in Connie Chang Chinchio's pattern.
We added ribbing to the bottom of the sweater. You can check out the mods on our Ravelry Project Page.
And here's Connie's adult version, the Austin Hoodie. Love!