Tamrac Expedition 6x - £110/$220
Big, beefy and rock-solid, the Tamrac Expedition 6x is supremely sturdy - although it's twice as heavy as some of the backpacks on test. There's room for a DSLR with fitted lens, plus up to a whopping 10 other lenses, flashguns or accessories. It's equally suited to carrying two DSLRs (both with lenses attached) along with a smaller range of extras. The provision of eight Velcro-attaching dividers makes the possibilities almost limitless.
Size isn't so generous when it comes to the laptop compartment, which can only accept compact models with screen sizes up to 14 inches. However, there are plenty of other small compartments for stashing memory cards, filters, batteries and the like.
The tripod attachment system on the front of the bag is particularly effective, and straps are available for carrying it underneath instead, if you prefer.
Like the Tamrac Adventure 9, there's no rain cover supplied, but water resistance is very good, coupled with weather-proofed zips on smaller compartments and weather flaps that cover the zips on the larger sections. With plenty of padding and wide-ranging adjustable straps for shoulders, chest and waist, the backpack is comfortable to carry even when fully loaded.