My feeling is, if it aint broke, don't fix it. See, you know your bike, you have maintained your bike to at tee and that is very important. If you don't know how the other bike was treated it might not be such a good deal even though the bike is newer. Do you feel like you need a bigger tank, wider gear ratio, and a lot softer suspension? If so, get the wr. Other wise, ride whatcha got.