I’ve rented the PD-1 twice, using Canon XL H1 cameras. It is as it’s advertised. Because of its lightness, rolling over smooth concrete floors is a challenge. Every little, almost imperceptible imperfection in the floor transmits to the camera. Use the dolly track for your moves. It can be a little tipsy due to its lightweight, so cameramen should use some commonsense while operating it. As for the boom feature, it is reasonably smooth and once you get used to it, you can smooth it out for slow stops without jarring. If you’re wanting more smoothness, go to the heavier more expensive units. Their mass makes for better control on smooth hard surfaces and for lifts. Their heft helps isolate camera movement and large cameramen won’t tip them over. Overall, I think this small, lightweight dolly is pretty good, not perfect, but very good. I’d recommend it. If I had more use for dolly moves, I’d own one outright.