I have 12 Exmark Lazers and 5 Walkers. Both are very dependable if maintained well. The Exmark is much quicker and easier to work on and ALOT less expensive. Problems I have encountered With each...Exmark spindle housings are not as good as others, but that would be about it. Walkers have some problem with the exhaust going bad. Keep in mind these machines run 8-10 hrs. per day 5-6 days a week. All said they are both very good. Exmark gets the final vote though.