You don't say what kind of traveling, by car, by plane, by foot? It makes a difference. By experience I learned that carrying around a lot of equipment I don't need is a pain, in the arms, and back. I have three bags, a Tamrac Pro 12, very large, that holds everything and is my general storage bag. I use that one when I'm flying to an event or traveling by car and I will be doing a verity of shooting. I have a Low Pro back pack for when having to walk to an event, or walk around the event, like the Sun Flower Festival where I put in several miles on foot. I have a small Tamrac bag for events where I know I will need only limited equipment. So the only person who can determine the great d90 bag is you. What is your shooting style, what equipment will you need, how will you be traveling? There are a number of manufacturing companies that make a lot of different styles, types and sizes to choose from. And most likely as your style and skills change you will find that you need "another" bag.