So this means that you may decide on a more expensive, quality constructed machine with less features than a cheaper model because it feels more comfortable to you.

Pay attention to construction and weight requirements of elliptical machine. If you are going to be using trainer a lot, you will want a sturdier model that can withstand heavier use. If it is just going to be used occassionally in addition to other equipment, you can probably get away with a cheaper model.

Also please, please pay attention to weight requirements - you don't want to just waste your money (in an effort to save) on a trainer that is going to break or wear out and not be of any use to you because you did not bother to pay attention to weight requirements. Worse yet, you could actually injure yourself by ignoring these details. It's best to invest a little more.

To help you get more out of your workouts, I would definitely suggest that you try to purchase an elliptical trainer with adjustable incline (simulates different walking and running positions) and upper body attachments or poles. You should also choose a reputable brand that is easy to repair if repairs are ever needed. However, only you can decide which machine is best for your needs.

If you're choosing a motorized treadmill, you'll definitely want to consider motor power. Generally, larger and heavier motor is, cooler it will run and longer it will last. But don't get burned - you should choose a reputable brand when considering motor power also. Reputable brands tend to use better quality parts than cheaper models that may have heavier motors. So be careful.

And you don't want to buy a treadmill that is going to cost a fortune to fix if something goes wrong - so check out owner's manual before buying to make sure that parts are easily replaced and not too expensive.

Okay, after you've evaluated what you want and need in your treadmill, you can consider cost. Treadmills can start at about $400 (el cheapo models) and run up to around $4,000 (top of line luxury). Basically, you'll have to weigh quality and features you require against what you're willing to spend to arrive at a treadmill purchase that you're satisfied with and will enjoy for a time to come.