I have used and enjoyed my Nordic Track Elite 1300 cross trainer. I have a good quality dual action stationary bike and I alternate this machine with the bike to get the cross training benefits. I checked reviews and found this to be highly rated. I have been pleased with the durability and feeling of strength the machine imparts. I have a chronic knee problem and the smooth action allows me to work out with minimal trauma to my knee. The Nordic Track Elite 1300 is a big piece of equipment and not very portable. I had originally intended to put it in an upstairs room but moving it already assembled was a not possible. i may disassemble it and move it but that is considerably more effort. The footprint of the Nordic Track Elite 1300 is fairly big and takes up considerable space in my workout area. The machine is quite versatile with many different programs and levels that allows you to use different heart rate zones. I use 3 different levels: Peak (>85% max heart rate), Cardio (70-85% max heart rate) and Recovery (60-65% max heart rate). I would recommend this machine to a friend.