This is a fine place for said questions. You may also want to try lawnsite.com which has pros and homeowner forums. From what I have read on these sites, the top mowers are Ferris, Scag, Exmark, Bad Boy, and Hustler. I am sure there are some I've left out. I would try to get dealers to bring the mowers out for test mows on your property. ZTRs require careful handling on hills, and some cut better than others. If you are mowing 5 acres, comfort is important, so the test drive on your terrain may make all the difference. Many say the dealer is as important as the brand of machine, so that's another thing to evluate. Good luck, and post pics of your winning selection. Brian