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it depends on what lens and camera we are talking about... I use various set ups depending on what I am using but if i have lot's of gear i take my Compu trekker plus AW if i only have my dslr 2 lenses and mbp i take my Crumpler cheesy disco.
more details please
 
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I just got a Lowepro Compudaypack in grey. I use it with my Nikon D40 with kit lens, and a 55-200mm, and my 15" classic MBP. It says it works for laptops up to 17", but I find my MBP in booq sleeve fit perfectly.

http://products.lowepro.com/product/CompuDaypack,1922,16.htm

18-1922-IMG5L.jpeg


I still have room for 3 more medium range lenses, or 2 lenses and a flash. Works pretty well so far.

*edit* forgot to mention I got it from an eBay seller for less than $50 shipped!
 
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