for moving a game with the legs on, I'm a big fan of the Pinball Skates: http://www.jabetc.com/products/pinball-skates-dolly

I had a Wico pinball lift type thing and it wouldn't fit under about 1/2 of my games for some reason. I've heard of others having similar issues.

Pinball skates are nice and easy.

As far as moving a game when broken down I love these: http://www.northerntool.com/shop/tools/product_200624027_200624027

It has some legs that pop out of the back to take most of the weight. Of course these don't work on grass usually. Our local show guys/gals bought a few of these to load in games and also rave about them.