Lightweight champ

Lifespan TR 2000 fold-up: Compact treadmill, great for small spaces and small runners, with nice safety and performance features, including a rare 5% decline.

Likes: Very small footprint (63.5 inches long) due to unique under-the-belt motor (rather than in front); 32 inches when folded up. Includes 2.5-horsepower engine with maximum speed and elevation of 10 mph and 10 degrees, with a 1% to 5% downslope. Convenient handlebar speed and incline control toggle buttons let you adjust at full stride. Despite small size, the deck is a passable running length (56 inches). Child-safe belt pauses after 20 seconds of nonuse. Feels firm compared to other treads in this price range.

Dislikes: On the descents, I felt some belt slippage at 9 to 10 mph. I weigh 180 pounds; the salesman told me he recommends this one for runners 165 or less (the recommended maximum user weight for walkers is 350 pounds). Also, none of the programs include descents. Heart-rate chest strap is optional. Price: $1,599 (on sale at $1,399). (877) 654-3837; www.lifespanfitness.com.