we got the regular cargo cover and a boot tray, which is about the same price as the net cargo divider - money better spent imho. The divider securely fastens at the bottom to the carpet via velcro, and the boot tray offers even more stability in preventing things sliding forward thru the divider.
Very happy with the arrangement - it is the finishing touch on the cargo area!
of course, if you really intend to load up the cargo area towards the ceiling, I can see how the net divider might be a necessity.