Awesome calorie burning Machine that is well made. Im a fan of fan resistance and if I hadn't bought this I probably would of got a concept 2 rower instead. Something about a whirring fan that feels natural and allows for infinate resistance. (Hard as you can push). I've been burning between 700 and 800 calories in 45 mins(an episode of Doctor who). You can use legs and arms( in both pushing and pulling motion). I like to mix it up between arms and legs then legs then just arms then just legs in reverse....(you get the idea lots of options) . Doesn't take up huge amount of room. Great build quality and warranty. The console gives lots of stats such as time rpm calories speed distance. You can also use a polar heart rate strap and see your heart rate(check compatible belts first though as some don't work)
You can also use it for hiit training which is very popular at the moment. You can push this thing hard without any worries. You will break before you break this machine.
Check around on the net you will find loads of good reviews.
You get what you pay for and the build quality is excellent and very robust. Recommend