Cybex Arc Trainer Vs. Elliptical

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I was looking for a new machine to switch up my daily routine. I ALWAYS go on an elliptical for 45 minutes a day doing an incline or 12 and a resistance of 8. I go pretty fast and burn about 600 calories. I wanted another high calorie burning option because sometimes it just gets boring! What are your opinions of the cybex arc trainer? Good? Bad? Tiring?