I picked up some cheap lunch coolers from Walmart (6 dollars) and removed the inner hard lining. That leaves a soft cooler that I rest the Einstein in and I also threw in some packing bubbles in case it ever dropped. The top of the cooler has a zipper that will open a small compartment where i keep the extra fuse, bulb, cords, etc.
I then bought a waterproof hard case with handle meant for carrying tools and placed 3 of the coolers inside. They fit snuggly and I can carry 2 Einsteins and 1 VML. I can lock that baby up and put it on a roller if I want or carry by hand and it's probably not more than 20-25 pounds.