I have decided to purchase an Exmark zero turn mower. I have been talking with a local dealer that has great customer service and have decided to give my business to them. I have 4 acres to mow with 90% of the property sloped. At some point in the future (a few years) I am going to purchase a tractor and will probably mow 2.5 + with it. I have narrowed my choice down to the Lazer Z series. I wanted to purchase a s or x series but I can get a great deal on the Lazer Z E series w/48" deck. My question is......any reason not to go with the E series?