I also suffer from shoulder problems. I use a Sandberg which tops the scales at 9.25lbs. This is the first strap which has really taken the weight of the bass. I like to wear my bass high so I couldn't really get the strap short enough for my liking, however I was still able to get a good idea of how effective the strap is. I'm quite broad shouldered so I was ok with the width but would prefer it narrower provided it didn't affect he ability of the strap to distribute the weight.
My wife worked or a leather manufacturer for 8 years and she commented on the high quality of the leather. Its also very well made. I've probably added noting new to the opinions already voiced but suffice to say I will be placing a order.