I've never trusted quick release thingies holding my camera (if they can, they will), which rules out OpTech and many other straps of that type. For years I have been using Domke straps without the metal swivels (I also don't like anything metal close to my camera... if it can hit a lens, it will... which has kept me from using the otherwise remarkable original Domke bags: flying metal fasteners). The woven-in rubber strips on the strap have always worked well for me, even on slick nylon jackets, the strap is very flexible, comfortable on my neck and, if need be, wraps easily around my wrist when I want to carry the camera that way.
I have tried most of the straps over he years, including op/tech, upstrap, etc. Loved 'em, but my eventual all had some problems. one problem with all of them was bulk, particularly when putting back in bag.
I am now using the Domke straps for a number of reasons. The rubber strips are really amazing. When tight on your clothing they do not move at all. A little shrug to loosen and you can zip the strap around to get the camera where you want.
The really big reason for going with the Domke is that I can make it any length I want. Most straps are, for me too short. I want my camera down a round my waist...either off the should or, quite often, bandolier style, across my body. Bandolier style is better for long carries, keeps to snug to body, and gets most of the weight and torque on the legs rather than ones back. As mentioned above, a quick shrug and the camera is free to me moved around, similar to black rapid, but with strap sliding around.
It uses standard 3/8" webbing, that can easily be obtain on the Internet (try dog sites sites is also for leads). The webbing on the Domke is no sewn to the "pad", so can easily be replaced...and made any length.
I like the 1.5" version, which I think only comes with the swivel clip. The swivel clip is up by pad. Since you are "rewebbing", if you don't trust the swivel you can easily remove it.
I personally like the swivel clip, but want it close to the camera, not the pad, so that, on a tripod, when unclipped there are no straps dangling. To attach to the camera, I use the Op/Tech Utility Loop connector http://optechusa.com/system-connectors/utility-loop.html