I had it in my mind too purchase a 36"/15hp mini fastrak. Going through these forums I am not sure. My property is 3/4 acre. Not all grass of course. But enough grass to warrant the need for a rider. Just ask my knees. I notifed the dealer I have been working with with the intentions of ordering a 36"w/15 kohler. He said i wouldnt be disappointed. The yard is flat with not much to trim around, just a couple trees. Should i consider a 42" or is the 36" a good choice for this size yard? Thanks for any input.