I had a trainer. I like this so much better. The tires get black from what was told to me to be aluminum dust and nothing to worry about. It comes off the tires when you ride. But it'll make black marks on your floor. I carry my bike outside to avoid that.

If you want resistance, you'll get it in spades. It has a lever that changes the resistance. I can only do it on the lightest resistance and still shift gears for intervals.

E-Motion is the only one I've ever tried. They were at Bike Expo for a couple of years. They're a great company to work with--all family.