I just went through the same thing. Was in NYC and went to B&H and tried both. The RS-7 seems a better fit (at least for me) and apparently many of the sales staff have the RS-7.
I have a wrist strap that I tend to always keep my right hand through, so adding the RS-7 was very easy.
Also, when I opened the new RS-7, it now comes with the new generation single piece fastener (FastenR3) and not the original two part version - a pleasant surprise since the two piece one had the D-ring that could perhaps come out of the screw mount.
http://www.bhphotovideo.com …_Rapid_FR_3_FastenR3.html![]()
Took off the neck strap and found I was taking a lot more shots and the shoulder pad stays in position much better with the RS-7 vs the RS-4.


