Standouts on the elliptical circuit

Buying an expensive, all-body elliptical machine -- even cutting-edge models that push the technology envelope like the novel sit-down and multi-mode models tested here -- might seem a bit counterintuitive in the midst of tough economic times. But bull and bear markets don't matter if you think of health as a long-term investment. The four excellent, club-quality machines below, each of which deliver smooth, heart-rate-monitored, arm-and-leg aerobic workouts that burn calories without joint stress, will pay dividends for decades.

-- Roy M. Wallack

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Change it up

Precor AMT (Adaptive Motion Trainer): Unlike other ellipticals on the market, it features a free-form, user-determined foot motion that can, on the fly, change from a vertical stepping motion to an all-out, full-stride running motion.

Likes: Exhilarating, effective and addictive. I loved the variety and challenge; it can be a different workout every day -- or every minute. Allowing you to move the way you want, from easy to all out, it encourages a harder workout than a normal elliptical. The stride length automatically varies from zero to 27 inches, as you step, stride, run, walk or anything in between. Includes resistance adjustment, heart-rate programs and a variety of workout programs but no elevation controls, only a lighted "interactive stride length" dial that lets you watch and experiment with your own real-time motion. Relatively floor-space-friendly at 56 inches long.

Dislikes: As a commercial-grade machine, it's priced like a used SUV.

Price: $7,995. (425) 486-9292; precor.com.

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Sitting pretty

Octane xRide: The world's first seated elliptical machine.

Likes: Although originally intended for older people, it provides a superb workout for all ages. The comfortable seating position calls to mind a new and improved recumbent bike, with the short seat and back pad gliding up and back at a 45-degree angle. The back pad also tilts for a custom fit. Great variety; programs allow all-body, arms-only and legs-only workouts. Multi-position handlebar lets you work arms at different angles.

Dislikes: Poor control-panel placement. Although I'm of average height (just over 5-foot-9) I had to reach forward, off the back pad, to press the resistance and workout keys. While merely irritating for me, it would be harder to manage for short, senior exercisers. A land yacht at 71 inches.