When I was looking last year, Storm's Rolling Thunder 4 ball (2 balls on top of 2 balls) had the best space arrangement and pockets, the best warranty (5 years) and the best wheels. It has been holding up very well rolling over some horrendous parking lots.
Now K&R and Brunswick has joined Storm in providing a 5 year warranty, one of the main reasons I went with Storm.
ALso I still prefer lifting only a 2 ball bag into the trunk of my car. The top bag sits on the bottom and I never attach them. So I have no trouble separating them if and when necessary. As for 3 ball bags, I think you need to be a weight lifter to constantly dead-lift that much ungainly weight (long bags) into and out of your trunk or the bed of your truck, time and again., WITHOUT doing some damage to your back. They're not that heavy, but they are awkward to handle and to maneuver into and out of your trunk or your truck. One twist the wrong way and ... pop! When you're 18 or 25 or 35, you're all but invincible, but even people that age have had back problems. Once you get older, the chances get higher for an injury without apparent danger.
"None are so blind as those who will not see."
"A comedian says funny things. A comic says things funny."
