Hi williamchew85,
To be fair, I've not used the R3 before so I can't really do a comparison. :dunno: However, I just bought a R4 from Fisher yesterday.
I tried it when I got home. The R4 really makes me wonder the magic of simplicity. A simple-designed strap which counters alot of photographers problems e.g. original straps blocking your viewfinder etc... I tried various movements & the R4 enables me to grab my DSLR at any instances.
Personally, I got the R4 because I usually carry my 3yo son when we goes out. I have to place the camera behind me. With the original strap, I usually have to adjust the strap just to get into a comfortable position. The R4 eliminates this problem. :thumbsup:
Overall, I'm glad I got this strap... :thumbsup: