I've been using the Motorola Pure H15 Bluetooth headset extensively for the past couple of weeks. It uses Motorola's CrystalTalk technology and some great noise-suppression techniques so you can always hear your conversation. So far, it is the best Bluetooth headset I've used.I have been impressed with the MotoPure H15 from the start. Motorola invited a bunch of tech journalists to try out the H15s in a noisy environment: Grand Central Station. We paired up with another journalist and walked all over Grand Central Station testing how well the H15 cancels noise and performs in an environment that is pretty unfriendly to cell phone conversations

At one point, I stood directly underneath an insanely loud fan, not far from a train that had its engine running. Despite the huge amount of background noise, I was able to hear my caller perfectly well, and he didn't hear any of the background noise coming from my connection.

Motorola says the H15 was designed for busy, mobile consumers who are on the go and in frequently changing noise environments. As surrounding background noise increases, users won't have to adjust the volume manually, because H15 automatically enhances frequencies to improve call clarity in both loud and quiet environments.

It does not use active noise cancellation to do this. Rather, it simply detects the increase in background noise and raises the volume of certain frequencies of the H15's earpiece accordingly.

Earlier this week, I used the H15 during a conference call. I happened to be sitting in a busy Starbucks during the call, not more than 8 feet from the espresso machine. Even with the baristas grinding beans, steaming milk, and blending frozen drinks, I had no problem hearing everyone on the call. And, thankfully, none of the people I was speaking with heard any of the background commotion from the Starbucks.

The H15 has a few other nifty features.

It makes use of the Motorola flip design with RapidConnect technology. This makes it easy to use; just open to talk and close to save battery life. With the headset closed, it goes into a sort of "sleeping" mode and isn't actively connected to the phone. At first, I was worried that I'd miss calls during the time it takes to open the headset and re-establish the connection between headset and phone. That was a baseless worry. The H15 re-connects in as little as 1 second, meaning there was no such thing as missed calls.

The H15 also can be connected to two phones at once. This means that if you happen to have two different cell phones, perhaps one for work and one for personal use, you'll be able to take calls from either on the H15.

In all, the H15 easily outperforms other headsets I've used.