I'm posting this to help anyone who is looking for a new and better strap.
Here is quick summary of the advantages and differences between several camera straps that I own - things that have proven important to me.
Here are my priorities:
1) Comfort
2) Security
3) Flexibility
4) Quick access to camera
5) Easily and quickly removed from camera
Since I owned each of the following straps, I'm speaking from personal experience with them and how they met MY specific needs. A personal preference is ALWAYS involved when selecting a camera strap.
Black Rapid RS7 and
Black Rapid R Sport Does most things well.
Well made. Comfortable.
Handy anchorage for optional "Joey" storage pockets (if you really want them there.)
Anchorage to the camera system can scratch the bottom of the camera.
Direct anchorage to the tripod socket is not as strong as if a plate is used to counter torsional forces.
Strap anchor lug must be removed to mount camera on a tripod monopod, gimbal, etc. Too many removals and re-installs of the mounting lug invites a less than secure mount.
The quick disconnect can be opened with one hand, a liability if careless and it makes it easier for thieves when traveling in foreign locales.
The camera connection has a potential weak link at the end of the locking swivel hook that can wear and fail. (But I have never heard of one failing to date...)
See:
http://www.blackrapid.com/products/curveand:
http://www.blackrapid.com/products/sport Cotton Carrier Very comfortable (but restrictive)
Awkward twist required to free it from the clunky metal chest plate; especially so with a long telephoto (and geeky looking).
Strap anchorage must be removed to mount camera on a tripod, but now a adapter plate is available that allows use with an L-bracket.
The vest system is needed to comfortably carry a heavy camera, and it is fairly heavy by itself.
It also did not fit easily into my back pack and camera bags.
I just did not like it. Personal preference, so personal bias is involved.
see:
http://buy.cottoncarrier.com/cotton-carrier-camera-vest-p/635rtl-s.htm Carry Speed CS-Pro and FS-Pro (Specifically the FS-PRO camera sling strap with F-1 foldable mounting plate)
Better anchoring system to tripod mount by using a standard Acra Swiss plate with a pivoting swivel ball for attaching the camera strap mount. Stronger and more flexible as it can go off and on a tripod without removing the strap anchor from the camera.
The camera strap has a double lock disconnect which is more secure and works well.
Supplied with a second security strap for long telephoto lenses.
Comes with an easy-to-use wrist strap which connects to the same mounting ball. A secure feature to have when mounting and un-mounting the camera from a tripod.
Widest and most comfortable strap of the lot. Great for heavy lenses.
The ball and socket connection is probably overkill, so that appeals to me. Very very secure.
See:
http://www.carryspeed.com/products/fs-pro-camera-sling-strap-with-f-1-foldable-mounting-plateand
http://www.carryspeed.com/collections/camera-straps/?ref=N11912and
http://www.carryspeed.com/collections/ds-series Luma Labs Cinch A solid design by a small firm without a big advertising budget.
Uses both the tripod mount and one camera body strap lug; providing double security anchorage and less stress on one mount.
Strap anchorage must be removed to mount camera on a tripod.
Offers a well designed adjustable strap for keeping the camera at your side, and adjusting the strap on the fly. Takes some getting used to, but it works and is a good concept.
See:
http://luma-labs.com/products/cinch for more information.
So which is best? There is no winner. They all work far better that any OEM strap that came with your camera and offer worthwhile advantages. So it quickly becomes a personal choice based on your priorities (see mine listed above).
If you carry a camera around all day, comfort is a primary concern. Cotton Carrier Vest, Carry Speed Pro and Black Rapid Sport are best in that regard.
If you are carrying a heavy telephoto on a less expensive DSLR, the tripod mount could be over stressed (my opinion). The Luma Labs Cinch and Carry Speed (when using the second lens strap) are the best choices. Both have a more secure mounting system. (The more expensive "pro-sumer" and professional DSLRs have a stronger tripod mounting plate.)
If you want to carry some very small items on the strap, the Black Rapid system offers pouches that are easily attached to the strap in addition to the one that is integrated into the strap. This convenience is important to some folks. I never used it as I did not want to carry a CF card full of images and risk losing it if the camera was ever stolen or lost.
If you want to carry two cameras the Black Rapid DR-1 and the Carry Speed Pro CS-double have good options to address this. This allows flexibility without having to buy two straps from the onset and easy conversion back to one camera.
(The Cotton Carrier also offers a 2 camera option, but I found it cumbersome and restrictive so I sent it back.)
At the end of the day, only you can decide what strap system works best, and you often can only do that after you try out the most promising straps for several days.