Here's another vote for the Gitzo traveler. I was in the same boat, doing a lot of hiking and traveling. I had bought a Manfrotto carbon fiber to save some money, but I quickly decided to save up for the Gitzo. Now, lighter can mean more susceptibility to tipping due to wind if you're not careful, but it does have a hook on the bottom which I can hang weight (like my pack, or a plastic back with rocks from the trail) for stability, and if your 70-200 is one of the heavier versions, it may be worth using the tripod collar for center of gravity. As someone said above, the best tripod is the one you have with you. A heavier tripod is no use if you're not willing to carry it on your longer hikes.
I'm intrigued by the Benro, I don't know if that was out a couple of years ago when I bought my Gitzo, or if I just hadn't run across it in my research. Judging by one of the links provided above it's almost twice the weight of the Gitzo traveler. 2 or more pounds difference; for many, that's probably fine, but everyone has different requirements depending on what else you're carrying, distance, fitness level, etc. For me, 2lbs can be a lot when I'm out all day with 3 lenses, spare body, accessories, food, water, etc.
If you're also traveling a lot, I'd also check the collapsed height of your tripods you're considering. First, remember, that's without the head, and factor that in, if you're lazy like me and don't want to be taking it off just to squeeze it into your suitcase/duffel bags/whatever. My Manfrotto was just a bit too tall for my medium/small suitcases even without the head, which I didn't realize until I was packing for a trip.
