So I did some digging - we got the Pro-Form 12-TT. I'm not sure if they still sell it or not. It has 2 drawbacks in my opinion - The deck is longer. Might be a plus for some, but when it's folded up, it's TALL. In our case, when it's folded up, it blocks the TV I installed in our gym from being seen from other equipment. Boo. Plus, I don't like the mechanism for locking/unlocking the treadmill. The piston pivots out to lock. It's about 2 feet off the ground. Our 3year-old has nearly backed into it several times playing, which would unlock the deck and it would fall on him. Unlikely to do major harm, but not something he'd enjoy.