Apart from screaming Nikon, the camera strap supplied with my D90 feels like sandpaper on my neck and is so short I have to hang it round my neck when walking around. I prefer to wear it across my chest on a walkabout, and only have it round my neck on an extended fixed shoot.
After much searching of forums and Googling I finally came up with what seemed like a decent workable strap system, ordered it from the US, and now just six days later it has arrived and it has met all my expectations. Comfort and versatility.
It's the Optech Pro Loop Strap, combined with the No 9 System connectors. With just the strap it sits very comfortably around my neck, the weight being taken on a contoured 60mm wide neoprene (Wetsuit material) strap which has the main strap attached over it in such a way that the neoprene can stretch to absorb jolts. When I attach the No 9 extensions it sits comfortably across my chest with the camera at a good position just below my waist at the side, plenty of strap to get it straight up to my eye. Plenty of room for adjustment of both ends of the strap and the extenders.
Fully washable after the neoprene has been subject to a hot sweaty day.
I'm very pleased that what I have read about this strap appears to be true. The setup cost me around AU$41.00 including delivery from the US.