Hydraulic vs. Sled Wheel Dolly

[jcox]

My pops is just finishing building out his garage and then we're going to move both of our 69 Camaros in to work on them.

I wanted to get him some wheel dolly to make it easier to move the cars around the space but unsure whether to go with the hydraulic dollies which have a mechanism to help raise the wheel or the sled type that you put under a raised wheel.

Would appreciate you sharing your opinions/experiences.