The most important thing to keep in mind when buying a piece of cardio equipment is that you must try it out before buying. All cardio equipment is designed to do the same thing, and that is elevate your heart rate. The best cardio piece that you can buy, is the one that you are going to keep using over and over. The other important factor is quality. Because you are making an investment in your health, the last thing you need is a machine in the basement that doesn't work properly. We believe that this is a purchase that you will make one time and we have used our 30 years of experience to hand pick our line or cardio products accordingly.