When I was a shop mechanic back in the late '90s a Ross MTN bike came in for repair. This one was very high end: ball-burnished aluminum frame, full XT componentry, Rock Shox Judy fork and the latest Mavic rims and foldable kevler tires. I tend to believe that the frame was made for Ross by GT or somebody like that.
I was pleasently suprised the see this but you never know what shows up at a shop. I also once saw an early '70s Murray with a complete first-generation Dura-Ace component group!