I have a Bob Shark strap on my 183
The basic straps are ok for the money, but if you are going to get one go for the Vertigo they are much better. Personally I am not a big fan of the Bob straps because I think they are too thin. The other problem I ad with this one is that it is a 26/26mm strap and not a 26/24mm or 26/22mm. I did not see any option for anything but a 26/26mm either.
This is a basic, I payed $6 for it on ebay.
Most of the Bob straps I see now are around $30 + Shipping and that is just over priced IMO.
For $30 I would rather buy a discounted strap from Elliot or a strap from Don.