No problems with button holes that i can remember. Small can be good because i was forced you use pretty big buttons. If yours are coming out small, i suspect you are knitting through the back loop instead of the front loop (or vice versa?) on the yarned over stich, thereby twisting the stitches. Just a guess
I'm making Knitty's "T Twist Tee" with this yarn right now and I like it. I googled the yarn before I bought it and read other positive reviews of it which I'm having trouble finding to share here. I don't have that much experience knitting with cotton to compare it to, but so far this yarn looks and feels great. The color I picked is the reddish "cake" one, which is pretty much burgandy in person. Basically what I expected. Pattern: http://knitty.com/ISSUEspring06/PATTttwist.html
[color=green]Despite some mixed reviews, I've decided to try making this tee. I hope it doesn't turn out to be too maternity looking. I will definitely post pics if it works out (or if it doesn't)![/color]
Thanks!!! To answer razzmcspazz's question I worked on this sweater for two months on and off. It definitely took longer than I thought because for some reason I thought I was in the home stretch once I started the sleaves but closer to half way. Regarding the buttons, CosmicPluto's pattern called for that many buttonholes but I would do less if were to make it again.