I have a 2003 Honda Rincon with no power steering and a 2015 Polaris Sportsman with power steering. Is power steering nice? Sure it is, but a year ago I noticed that the steering on my Rincon was much more difficult to handle than I remembered. Being an older quad, things dry out/wear out and that was the case with the Rincon. A trip to the dealer has its steering back to normal and while not power steering, it's quite good. They replaced the bushing where the steering rod mounts to the frame, installed new ball joints and aligned it for better steering response. I just now got back from a 20 mile back county ride on it and it is quite easy to handle.
Try checking out those areas on an older quad, it might just make you decide to keep it.
