I have ran across an older man (homeowner) that would like to sell his JD "F620" mower. It is just like the new "F687" but 2 or 3 years old. It is 20 horse and has a 48" deck with bagger. It is in pretty good shape with only 146 hours. His ASKING price is $6000. I was wanting to know if these mowers have a problem clogging up or do they do well bagging. Is this a good price? Any info would be great.