I've just bought myself a Nikon D40 (with the kit lens). This is my first SLR so I'm sure I will have plenty of questions, although I'm trying to read up on the subject first. Anyway, I need a bag to carry it around in and I'm thinking of getting a Lowepro SlingShot. I'm not sure which size to go for. I doubt I'll be getting many new lenses in the near future, probably only a 55-200 or something. Does the 100 come with the rain cover that the 300 comes with? It's not really clear on their website. If so I'll probably go for that one, or is the 200/300 worth the extra money?