I am also a fan of the Turner Saddle Co. sling. I believe they offer rack and "match" grade. The match being a little longer. Correct me if I am wrong someone!
I also got a Sportsmansguide or other "discount" sling. I rate that as good/ fair, against the Turner. My big "dig" against the SG, was the color... However, the Turner was a lot more $$, but I feel that you get what you pay for. The leather from Turner was a better quality and the stitching was better also! Hope this helps!