Hello, I am looking to purchase a treadmill and am wondering if any of you guys could help me out. I'd like to find something with a relatively large running surface, 3+ hp, 10% incline and 12 mph speed. Durability is most important to me. I am willing to spend up to $1000 and would prefer to find a lightly used machine, but will buy new if I have to. Any suggestions on specific models or brands known for their durability would be greatly appreciated. Thanks in advance!