I have just recieved a Stubb'r lead from a company called www.collarways.com. It is advertised as a lead for powerful dogs and seeing as Murray comes into this category and tends to pull I thought I would try it. It REALLY works!! Not cheap at 25 quid but I used it on him today and I really did feel that I had him under control. It also has a nice chunky clip to attach to the collar and is made of latex so reduces any pull strain on the shoulders.
Just thought I would sing it's praisies on a site that specialises in powerful dogs