Hi, I just purchased the XTERRA Fitness TRX3500 Treadmill on Target.com for $859.99. It has a lifetime warranty with one year of in-house service, a 3.5 HP motor, and carries up to 350 lbs. I have read posts that say treadmills under $1,000 may have quality issues. What do you think about this product? Have you heard of any issues with its quality or customer service? Thanks for your input.