The First of the Performance Series, the Proform Performance 400 is surprisingly low priced for the amount of cool stuff it's got. The quality of the machine isn't up with the higher classed treadmills, but it's well above the others that can compare in this price range. This quick and affordable buy features cushioning system, a fold-up design, a heart rate monitor, a multi-window LED display, Ifit Live compatibility. built-in workout apps, a medium sized motor, a 10% easy incline, a 20" x 55" treadbelt, 10 MPH Max Speed, and 300 lbs weight limit. All these things aren't usually what you see in a treadmill so affordable. We give it good ratings for its high quality and low price.

MSRP: $799

Web Price: $799

Sale Price: $599

The Proform Performance 600, the 2nd in the series, is a bit more heavy duty than its little brother the performance 400. implementing the new Proshox Elite 2 cushioning technology it keeps your run smoother, quieter, and easier on your joints. The speed is fast, the treadbelt is wide, the and the motor is medium sized. This is a fairly average treadmill in quality, features, and functionality. What helps it stand out is its low price. Check out its features and compare it to others in the 799 range you'll be impressed with it. Compared to the 1450 it's very light and basic, however, for one of the most affordable home treadmills on the market this is a very solid piece of machinery.

MSRP: $999

Web Price: $999

Sale Price: $799

The Proform Performance 900 is a slick little machine with plenty of fun gadgets, and loads of hidden power. The heavy motor can push and push all day. Feel free to run entire marathons on this machine, it won't mind a bit. A 15% incline with 1 touch of your finger, and a 12 MPH max speed, helps you stay in control by immediately responding automatically to your every command. This machine will hold up well, and the warranty will back it up if for some reason it doesn't. The proform Performance 900 doesn't quite compare to the 1450, and if it isn't on sale you may notice that there are treadmills offering more in cheaper price ranges. However, if this is on sale, it is a great treadmill and great to put in your home for your family.

MSRP: $1,999

Web Price: $1,999

Sale Price: $999

The Proform Performance 1450 is the top of the line of the Performance Series. It's stacked with quality, power, functionality, durability, and cool features. This is one of Proform's top selling Treadmills, and there's a reason for that. If you've ever wished for solid treadmill that you won't have to worry about breaking down on you, and that you can count on to deliver the power you need for years to come, Here it is. At the price this is at, no other treadmill can compare. It's got a powerful 3.25 CHP DURX Commercial Pro motor, with all the speed, incline, belt-thickness, weigh capacity and fun features you could ever hope for. We especially like the built in web browser! The list of features goes on and on, so check them out down below. If you ever find this for under $2,000 be sure to swoop it up quick before the sale ends.

MSRP: $2,499

Web Price: $2,499

Sale Price: $1,499

The Proform Pro 2500 is a brand new treadmill in the proform line-up for 2011. The treadmill combines the quality, strength, and features of Proform's top selling treadmills. With the heavy duty 3.5 CHP Mach Z Commercial Pro Motor, any workout will be like a walk in the park for this machine. The strong 375 lb weight limit makes this an excellent machine for just about any size runner. With all the features they gave this machine, you'll never have a chance to get bored. Few treadmills compare in strength and power to the Pro 2500.

MSRP: $2,400

Sale Price: $1,599

The Proform Pro 4500 is an incredibly strong and solid machine built with all the finest components, and designed to last for a lifetime. The machine offers an endless supply of features including the new 10" full color touch screen web browser. The weight capacity is set at 450 lbs, making this one of the strongest treadmills on the market. The 3.8 CHP Mach Z motor is one of the most powerful motors you'll ever see in home treadmills. There is no other model in the Proform line-up that can compare to the Proform Pro 4500 in terms of strength and power. From top to bottom you get quality, quantity, and durability. Not a bad combination when it comes to deciding on a treadmill. Check out the rest of the specs below.

MSRP: $2,999

Sale Price: $2,999