I bought the Bagallini sling and used it last June was was very disappointed with it. The strap has two huge buckle like things on it and it was just very heavy and didn't feel comfortable at all. Plus it jsut had too many pockets for me. It took me too long to find what I was looking for. I like to keep it simple and as lite as possible so now I use the Jansport Mini backpack. It just has the one large compartment and then another smaller one in the front. It is just perfect for my camera, wallet, sunscreen, and a few other small items. It has nice long staps so it's easy to get on and off quickly and it's small so it;s not heavy.
Hope that helps!