My Optical Drive is Failing, Do I Replace It or My Xbox?

My Xbox's optical drive is showing signs of imminent failure. Basically it has a lot of trouble reading discs, so I have to eject them and make it retry until it succeeds and the number of tries before it works increases every day. But once it does read the disk I can play that game without issue (this holds true for installed and uninstalled games).

My Xbox is almost 2 years old, and has a lot of hours on it. So my question is: should I just replace the optical drive, or would I be better off just getting a new console?