Black Rapid is a very good product I purchased one of their sling straps very well made last for a lot years. It costly but worth it. Your won't be unhappy. See below
Take a look at Sun Sniper the site see below.
I looked at the Op/Tech I was not impressed by the way they were made zig zag stitching on foam rubber not too much backing looked a little weak to me. See below
But the choice is yours good luck check them all out.
ThomasS wrote:
When I go hiking for a photo op, I usually like to take along two bodies. One with a wide angle zoom and one with a telephoto zoom. The Cotton Carrier looks like it would be a good way to safely (I'm thinking of the cameras) carry the cameras. Does anyone have any experience with these harnesses? They aren't cheap, so I don't want to make an expensive mistake.