For the occasional occasion where you might need to move a heavy object yourself, I've discovered that those folding aluminum hand trucks with the swing-out wheels are really pretty handy. You can find similar ones at many home-improvement stores; here's a web-link to one I happened to find (using a quick Google) just as an illustration:
http://www.handtrucksrus.com/crashdetail.aspx?id=462
Again, you can find similar ones at lots of other stores; I got a hand truck of similar design at Harbor Freight last summer on sale for ~ $30. It's very light in weight, stronger than it looks, has nice large-diameter wheels and a big toeplate, and sets up and collapses *very* quickly and easily. ...And since the thing (*including* the wheels and toeplate) completely folds flat, it doesn't have to take up much room in your vehicle-- if you've got a station wagon, minivan or SUV -like vehicle, you can just leave it in the cargo area strapped to the back of the rear seat with a bungee cord until you need it.