I have now had my Tony Little's Gazelle Edge for two years. While it is an effective workout tool, there are also some drawbacks. The worst thing about the Gazelle Edge is the quality of the construction. The main frame is still intact, but one of the foot pieces keeps losing its' plastic screws and slipping. Not good when you are walking on a glider! The gazelle also is bulky. While it is easy to fold up, it leaves scuff marks on the wall or hardwood floors, however you decide to store it.
The good qualities do outweight the bad qualities on the gazelle, however. It is a very good workout, and tracks calories, speed, time and distance, just like a treadmill. It is great on your joints, the knees especially, as you are not putting a lot of pressure on your knees. It also shapes your legs up nicely! You also get the benefits of an aerobic workout, since you are walking. It is easy to use, just step on and start gliding back and forth, holding the arm bars and moving them in rhythm with your legs.
Overall, the gazelle is a moderate purchase, one of those times that you get what you pay for.