These are the straps I have/had ... and unfortunately, I'm not too happy with any of them.
I recently tried a Joby Ultra Fit Sling Strap. I did not like it at all. The strap keeps extending as I'm walking. The only way to prevent extension is to lock it, which makes pulling the camera up to take a photo much more cumbersome. Even with the lock, the camera does not stay put against the "back" as the demo videos show. The shoulder pad does not have enough traction. So the weight of the camera pulls the camera down to the lowest point possible, which is right next to the arm. So my arm bumps into the camera as I'm walking. Very disappointed and it's going back today.
http://www.bhphotovideo.com/c/product/893352-REG/Joby_jb01257_bam_Ultra_Fit_Sling_Strap.html
I have a Street Strap, the poor man's version of the Artisan & Artist silk camera strap. I wish it was a bit longer so that I can wear it like a sling strap. I'm about 5'11".
Amazon.com : Street Strap - 46 inches Soft Round Camera Strap for Leica, Micro 4/3, Fuji Cameras with Round Rings : Camera And Optics Carrying Straps : Camera & Photo
Another strap I still have is the Barton 1972 Composer. It's an all leather strap, but like the Street Strap, I wish it was a bit longer. The area of the straps with the rings that come into contact with the camera are also a little bulky. So it gets in the way of my right hand as I'm holding the camera.
Barton 1972® - Leather Camera Strap | Original Braided Strap | Camera Neck Strap | Camera Wrist Strap | Leather Neck Strap | Leather Wrist Strap | Leather Camera Straps | DSLR camera strap | Leica Camera Strap | Leather Strap
I owned at one time is the Gordy's adjustable leather strap. I didn't like it, because the leather was hard and had rough edges. I'm sure it'll wear down with time, but my neck didn't care for the feel. And the strap also got in the way of my right hand as I'm trying to hold the camera.
http://www.gordyscamerastraps.com/adjustable-neck-horiz/index.htm
Last but not least is the Black Rapid RS7. It's a sling strap, and pretty comfortable. The camera sits at the lowest point due to gravity, which is going to be right between the arm and the body. But it's easier to pull up towards the face than the Joby. It's bulkier looking than the Joby, and uses a carabiner to hold the camera. Still not the perfect strap for me, but comes the closest. I still have this strap, but don't use it very often, because of the bulk.
http://www.bhphotovideo.com/c/product/661579-REG/Black_Rapid_RS7_1BB_RS_7_Camera_Strap.html
So after all that, I pretty much use a $8 neoprene wrist strap most of the time!! I just leave my camera in the messenger bag (Billingham Hadley Pro), and pull it out whenever I need it.
Amazon.com : OP/TECH USA 1801021 Cam Strap - QD (Black) : Camera And Optics Carrying Straps : Electronics