The big difference between Greg and Jason's racks that I can see with my naked eye without having Jason's stuff in front of me is the PVC width.
1/4" vs 1/2" PVC. I like 1/4"
I also prefer Iris bins to Sterilite. And the real selling feature for me is the 2 separate rows of 4" Flexwatt. Keeps em warmer in the winter, and if it gets too warm in the summer you just unplug one heat strip.
Definitely not knocking Jason's stuff because like I said, I haven't seen it. But from what I can see it also looks beautiful and amazing.