As of October 25, 2015, Titleist staff bag models TB4SXSF-0, CB511 and CB531 are popular, as they are the most watched Titleist staff bags on eBay.com. In addition, the Titleist 2014 Staff Stand Bag, identical to TB4SXSF-0, is also relatively popular on Amazon.com.
The Titleist 2014 Staff Stand Bag, model number TB4SXSF, has a five-star rating with 10 customer reviews on Amazon.com, the most of any Titleist staff bag. Amazon reviewers praise its look, sturdiness and lightness while not mentioning any negative aspects of the product. With one listing on eBay boasting 19 sales and another that is currently watched 66 times, this model seems to have cross-website popularity.
A second tour bag, Titleist Japan model CB511, currently has eight separate listings being sold on eBay, one of which has been watched 21 times. While another model, CB531, only has 15 watches on its most popular listing, a search of "titleist CB531" brings up an impressive 46 listings on eBay, giving this model more popularity from the sellers' side.
A staff bag, also known as a tour bag, are what professional golfers' caddies carry for them leading into televised games. Large in size, they are constructed to have room for a significant amount of equipment.