I have seen and held a pre-production unit that had over 1,000 hours of use. I could not tell the difference between it and a new one. It is an extremely quite running unit. They also have a 10 year warranty. I will be buying one when my Andis gives out.
If what I hear about coming large animal products from ConAir is true, they will be making a big splash in the next 12 to 18 months.