Has anyone ever tried one?? I have a treadmill and a portable stepper... my house is really small, and with 2 babies and a husband who works 70 plus hours a week, getting to a gym isn't an option for me... so I like building up a home gym as much as possible.... I know it's better to switch up my activity rather than just get on the treadmill everyday and I love the elliptical as a 2nd option, but didn't know if anyone has ever used one of the portable ones.... waste of money... or good buy?? A full size one is definitely not an option....