I've owned two Rotary brand lifts. An extended 4 post #18000 w/ 2 rolling air jacks and a 2 post assymetrical #12000. Both gave good service except for having to replace the cheap plastic air lines on the rolling jacks. My preference is the 2 post. It's easier to get around the vehicle with but you gotta watch where you place the lift arms. Get the lift arm kit(different adaptors to go on the arms for vehicles w/ full frames) and be sure to get the air release locks. These allow you to hit a button near the lift control to release the lift locks when you are lowering the vehicle. just my .02 Joe