Wheel dollies, Tire Skates.... recommendations?

[Allen]

I just put a 15 x 14 addition behind the garage to be a workshop/Nova parts storage area (once I find some more Novas for parts or collections of Nova parts!). Anyway, that'll free up some space in the back 1/3 of my somewhat deep 2-car wide garage.

With that back area of the garage cleared out, it looks like I can put a car (Nova or Corvette) on those wheel dolly/tire skate thingys that I've seen, rotate it sideways, and snug it up against the back wall of the garage and still fit two cars in the stalls.

With all that said, what are your recommendatios for the types of tire skates to avoid and to buy? I don't want to just buy any ol' set, get a car on them, and find out that I made a bad decision and can't hardly move the car.

What do you have or use?

Thanks for your help!