If you do end up getting a dolly for keeps...
http://www.northerntool.com/shop/tools/category_trailers-trailer-parts+trailer-jacks-dollies+trailer-dolliesBelieve it or not, the cheaper $59 dollar pneumatic tire one is the better one. People who have bought the $99 one with the flat free tires complain that the tires do not hold up well. The only potential problem is that these "dolly dollies" (that's what I call them) are a little larger than they look, and may have to be partially disassembled to store in the basement. I have a Master Tow, and like a previous poster, had problems lifting it to a comfortable level for hand movement due to the ramps hitting the ground. The dolly dolly makes moving the dolly much easier, and is a real back saver.