Hello everyone, my name is Kurt, and I am just getting ready to begin my very own residential and commercial lawn mowing company. I live in St.Lucia which is a caribbean island located in the tropics. I need some professionals like you guys to help me with choosing a VERY GOOD SELF PROPELLED WALK BEHIND MOWER. I would like to please incicate to me a durable brand and wheather i should go for a ZTR or a normal push mower. The topography of many of the properties in my country is slightly slopped and undulating (un even). Like I said before I am totally new to this field. I just graduated from college and I am only 20 years of age. Any help will be greatly appreciated. Thank you very much for your time and assistance. PS> ANYYY additional information that you may have for me will be GREATLY appreciated !!!