Health-Rider
I bought a Health-Rider treadmill 10 years ago at a kiosk in the center of a large mall and have used it for 30 minutes everyday. The thing just never quits! Never had a problem with it and would definitely buy another one when I decide I want a different one.
I paid $799 for it 10 years ago. I know they don't make that model anymore, but I trust they have decent equipment.
I highly recommend a Health-Rider treadmill!!