I have just bought a 2003 Exmark Model # LZ 27K 60-4 with a non-liquid cooled 27HP kohler and a 60" deck as you can probably tell from the model designation. The mower came with only 99 hours on the clock and looks to be in almost new condition. And man, do I love this machine! I am just using it on several properties that I own. What I would like to know is, what is the difference between my mower and the newer Exmarks of about the same size? That is, what innovations or changes have they made in these mowers over the last several years that mine wouldn't have? Anything I should watch out for on these mowers? Lastly, did I get burned paying $4680.00 for it with the mulcher attachment? Thanks.