Dakine EQ Medium Duffel Bag - Great carry on!
I used this bag as a carry on when I flew to AK this summer, and it worked out great! I took it on both Delta and Alaska Airlines without any problems. It is pretty spacious too! I was able to fit 2 weeks worth of clothes, a hair dryer, flat iron, toiletries, etc, and still had some extra space. Two weeks worth of clothes for me is about 3 pairs of jeans, 12-14 shirts, some socks, underwear, and an extra pair of shoes.