I am having trouble deciding on the following. I am looking at a new 2009 x500 with power bagger and HDAP tires, the dealer quoted me at $6200. My question is that I did a search for used 2008's and up came the following, a 2008 x540 with 48inch deck and 55 hours on it for 6000, and also a 2008 x520 with 60 hours on for 5400. What does everyone think about my choices. Are there any major differences from 2008 x540 and say a new x540? Im on a time limit ( I purchased a x320 and have about 8 days left to call them and tell them to come get it). The 320x is spinning up the hills and has troble going around the trees at my house. My only other option is to buy HDAP tires and put them on the 320, but its another 300. I paid 4800 after taxes for the 320x c power bagger 7 bushel. Please help me out!