I absolutely LOVE my Ju-Ju-Be. They can be a little pricey but they are SOOO worth it. Check out their website and there's photos and videos. They have tons of sizes. They are super cute and perfectly designed. They have really great changing pads and tons of little features. I have a bunch of the extras too: the sippy cup cooler, the snack holder, and the changing station thing for extra clothes. LOVE IT. Its comfy to wear too. I have the Be All, because I put tons of snacks and clothes and activities for my preschooler in too. It was nice for carring the foldup portable potty seat too, it slid nicely back by the changing bad. They are really easy to clean which I like. I also have a....darn it. Be Small maybe? Its the small back made for quick trips or the car? I leave it in the car with 3 diapers and a small flat pack of baby wipes and a back of antibaterial wipes for faces. I love having it in the car all the time. Then if I just have a quick run to Target I don't take the big bag.
But I do have to say I really love the new diaper bags from Miche. I love my Miche bag purse (www.michebag.com) and am totally addicted to the shells...but the big bag is the perfect size and they started making some really cute shells tha can be diaper bags. But it can still be a purse when you dont' want to put sippy cups and bottles and stuff in the pockets because they are so darn beautiful!