Think Tank Photo StreetWalker - £100/$150
Ideal for travelling time lords, the Think Tank Photo StreetWalker seems bigger on the inside than the outside. Despite a refreshingly slimline, lightweight build, it has masses of room for a big camera body and large attached lens, such as a 70-200mm f/2.8.
For more normal configurations, the Velcro-attaching partitions accommodate a DSLR with attached standard zoom, an additional seven lenses or flashes and small accessories. Two internal organiser pockets are supplemented with four external pockets for life's little extras.
Build quality is supreme, and there are neat design flourishes. Tripod attachment straps and the waistband are removable, so needn't dangle down when not in use. There's also a camera strap available as an optional extra, so you can hang the weight of a heavy camera and lens combination from the shoulder straps instead of around your neck. Carrying comfort is exemplary.
Because the bag is designed to neatly fit a large lens mounted on a camera, if and when you want to use that option, one side of the main section is wider than the other. This also ensures an equally good fit for both thinner and fatter lenses (complete with lens hoods).