I've both metal and Rino ramps. I've used both on everything from my CJ7, Prii, Ranger Pickup, a Dodge Powerwagon, Broncos (full and II), Caravans, Buicks and a Ford LTD over the last 20 years.
Whenever I reach for a set of ramps, I use the Rino Ramps. Yeah, they're a little beat up after two decades. Why? Where I used to live I needed studded tires for about half the year. Studded tires can scar up a Rino ramp pretty darned quickly. They can also be a little difficult to drive up on if the tires are wet, they'll slip on ramps. Aside from that, no problems at all.
They Rino ramp is not as tall at my metal ramps. The bumpers of the cars, the Caravans and the Prii easily clear the ramp as they crawl up the ramps. With the metal ramps, not so much. Even though they clear the bumpers I still tend to park the vehicle and kick the ramp into the tire.
Do they give me enough room to work under the vehicle? Yes, for undercarriage inspections, minor undercarriage work, oil changes, ATF changes, filters, etc.. For anything else I'll use jack-stands. I have been known to put the font tires up on the ramps and use jack-stands to lift the rear of the vehicle.
All in all, I've more than gotten my money out of them. I'd buy another set if I needed them, but they're still sitting on my overhead shelf taking up little used room just waiting to be used.
Yep, I like 'em.