Samsonite 'Spinner' cases for camera equipment
These guys make my favorite cases.
So nice to use because it's one big bag for all the big equipment (I still prefer a backpack for cameras and lenses) and it rolls on four wheels so no weight is on your arms/shoulders/back. You just push it along.
I sold my huge one to my friend Stafford Wheaton (Photo is from the review we shot). The price is really awesome for such a good hard case and it's also a great chair on travel/shoots!
I ordered an EVEN bigger one just now: http://amzn.to/NN7zbb
Here's the video review: