Very spacious, good to wear, safe for pickpockets, comfortable

Introduction:
My wife had me ever bought a colt bag from Lowepro who had thought out compartments, is well padded and very well finished. However, a Colt bag has the disadvantage take no accessories as lightning or another lens.
In a book by Scott Kelby I leave a recommendation from photo backpacks, which could be drawn in the stomach and had ready the accessory within reach almost like a work surface in front of a.
In addition, this technique offers the advantage that handbag thieves can not steal the turmoil of the big city from the outside a bit, while the backpack is worn.

Equipment:
I own a DSLR, a 50mm prime lens, a 17-50mm 2.8er, a 70-300er 4-5.6, a 18-135 3.5-5.6 and a Metz flash. In the future, another camera should still be bought. A tripod of Giotto and a Manfrotto ball head also belong to the equipment.

Actually had my equipment Flipside 300 sufficed only this was a few euros more expensive than the Flipside 400 and did not have a padded waist belt. So I opted for the Flipside 400, also keeping in mind that you can still tuck a 2.Kamera can there later and it indeed "not camera-specific things" can tuck there, eg Regencap, drinks, GPS Tracker etc.

Character / quality:
The quality is very good and Lowepro-typical on a super good level. Everything is super well padded and the layout of the interior can be designed very flexibly.

Space:
In addition to the main compartment there are various pockets which sufficient space for chargers, spare batteries, memory cards, etc. can. In the main compartment has enough room for 2.Bodys and min. 6 lenses including flash units. So even professionals should come to your taste here.
The layout of the main compartment can be adapted to their own needs individually by velcro.

Can recommend highly backpack and would buy it again.