Pros: Durability; ergonomics; built-in HR monitor
Cons: Doesn't fold
I've used this treadmill for just over a year now, and several things about it are noteworthy.
Incline: The 15% incline is good for doing low-impact walking workouts which push your heart rate. At this grade, it can almost substitute for a StairMaster. Most treadmills only go to 10%, so you have to run to get your heart rate high enough (assuming you're in shape).
HR Monitor: the heart-rate monitor is an important option; I use it to stay within my target heart range, and also to tell when I've cooled off enough to stop.
Comfort: The belt is wide and comfortable; it has just enough "give" to avoid jarring, but it isn't mushy. It's mostly stable, except for a slight wobble when running at high inclines. It's much more comfortable than running on a sidewalk, and I don't get shin splints as I used to.
Build / Design: I think the side rail design lends stability to the treadmill, and it gives me a feeling of safety. The cupholders are nice, and the display is at just the right height and angle.
Programs: There are several speed/incline programs, including one which keeps your heart rate within a certain range. However, I like manual mode because I can tweak my workout, depending on how I feel.
Durability: Recently, I had to move my PaceMaster Pro Plus to the basement of our new house. To make a long story short, the treadmill bounced all the way down the stairs, to the concrete floor below. Amazingly, this appears to have had no effect on its operation. Credit Aerobics Inc. for a remarkably durable product!
Time-saving note: Do not plug this into a GFCI outlet; it will blow the circuit as soon as you start it up, due to the high load.