We're in a position at my church (where I'm the director of grounds) to purchase some aerator equipment. We have: 1 JD LT155 lawn tractor 1 JD 770 tractor What seems practical, especially for our large field is some tow-behind equipment. Has anyone used tow-behind aeratoring equipment? If so, did you prefer the core aerators or the ones with tine tips? Here are few things I found in my preliminary search. This JD unit allows spreading as well... could be useful for fert. & seed too. Obviously something that is going to be easy to use and maintain, with price being important (unfortunately), is going to be important to the church. Prior, we rented Ryans and walked the whole campus. Not fun.