DH and I have been building a home gym over the past few months. It is now my turn to pick a cardio machine. I've been looking at the Bowflex TreadClimber TC3000. I've read the reviews on the internet and they are mixed--some people love it and others think it is a waste of money as it MAY need frequent repairs after warranty expires (this is what the "experts" said). Any of you used one? Own one? What are your thoughts? TIA!