I'm not a fan of backpack diaper bags. I don't know why. Maybe it's because I travel and already have to bring a full backpack.
I found some cute ones on ebay that are custom embroidered, but I'm not sure how good the actual diaper bag is.
The JJ cole ones seem cool but I'm hesistating buying something I can't actually see. Talk about being difficult about a diaper bag of all things! LOL