I'm looking to buy a good used aerator. Is this a good idea or should I just get a new one. I only have 5 customers right now that I aerate for, and have rented the equipment in the past. I would like to get one and increase my customer base in this area but don't want to shell out a couple grand if I can't increase my customer. Does anyone have an aerator for sale and what kind of brands do you recommend? I've used Ryan the piston action and I have used the rolling type. I like the piston action but I know I don't want to spend $5,000 on this equipment. At least not at this point. Any advice would be appreciated.