Headsets: best Bluetooth picks, including stereo models.(CELL PHONE)(Product/service evaluation)

Bluetooth, the technology that allows cell phones to be used with wireless headsets, continues to appear on more phones.

Using a Bluetooth headset is much more convenient than being tethered to a wired headset or fumbling for the phone when it rings. Paired with a cell phone that's Bluetooth-compatible, as virtually all new models are, the headset allows you to make or receive calls without touching your phone. The phone itself can be up to 30 feet away.

You can buy a Bluetooth headset for as little as $30, but be prepared to pay more if you want a very small, inconspicuous model that fits into your ear. Prices for those petite performers cost $100 or even more, about as much as you might pay for the phone itself.

More headsets are now stereo models designed for use with the growing number of cell phones that have built-in music players and Bluetooth stereo compatibility. Such headsets typically cost at least $100, more than you'll usually pay for a mono headset, which handles only phone calls. Stereo headsets have an earpiece for each ear. The earpieces are usually wired to each other or, with smaller models, to a small transmission unit that hangs around your neck or goes in a pocket.

Music quality was generally adequate in our tests, but don't expect a Bluetooth headset to sound as good as the best wired earbuds for an MP3 player.

HOW TO CHOOSE

Consider comfort. Smaller, lighter headsets are generally more comfortable than bulkier models. Most headsets have an ear clip or hook to hold them in place, but some of the smallest models insert into your ear canal. While that makes them less obtrusive, they can easily pop out if the fit is less than perfect. Look for headsets that come with an assortment of ear adapters to ensure a good fit.