Has anyone used the new Bowflex TreadClimbers: TC5, TC 10 or TC20?

The TC machines are treadmill, elliptical, and stair climbers all in one. This may be a good cardio machine for both me and Mr. Lime. This would be my first at home exercise machine purchase.

Is a Bowflex product worth it? The price ranges from $1, 000 to $3, 200.