I got my Horizon CSE 3.5 a year and a half ago, and I'm still very pleased and satisfied with it. I have a crazy schedule, so I'm not on it consistently, but even when I miss a few days, I can get back on it and easily get back into the "rhythm" of my workout. I chose an elliptical because I had a knee injury and didn't want to risk further damage. I used my elliptical later in the healing process without any adverse effects, and have no pain at all now. I also chose this type of machine because I'm not particularly fond of outdoor exercise in extreme cold or heat - call me a sissy, but I'm not into that much personal torture ;-) I just like to get my exercise, feel good about it, and get on with my day. I found I can read while using the ellipticaI; this model has a handy little ledge where I can prop a book, and it makes my workout even more pleasant. It's simple to fit a workout into a hectic schedule with this machine, and I can customize it to whatever my day is like without having to give it excessive thought. I chose the Horizon model because I have had a Horizon treadmill in the past, and they have great, dependable products, and wonderful customer service. I bought this one through the factory refurb program, so I also got a great deal on it. It has 7 programs which you can either personalize or choose a preset one, an easy-to-read electronic panel that shows your progress, a scrolling "encouragement" message, a heart rate monitor, and variable incline. The one little glitch my husband and I have noticed is that on the higher inclines at a higher speed it will give a little slip occasionally. I've only noticed it once or twice because I usually don't incline it as high as my husband does, but it isn't so frequent to cause a problem with his workout. Other than that, and an occasional squeak on the tracks - easily remedied with machine oil - I can say that I heartily recommend this machine, and, for a very satisfying, low-impact general workout, the elliptical is a great choice.