I've had a few different Bluetooth headsets over the years, including the Plantronics 510 and 520, the Jabra BT8040, and a Motorola one, and the Q2 is by far the best.  The ear loop helps keep the headset comfortably planted in my ear, and there a couple of different earcups provided to find the right fit.  I haven't tried the ring/friction cups since I use the earloop.  The unit is attractive and fairly lightweight, though I do feel like I have to be a bit careful with it so I don't break/bend the earloop when placing in my pocket.

There have been some comments about the placement of the on/off switch, and they are understandable since it is a bit awkward to use the switch if the Q2 is on your ear, especially if you don't have long fingernails.  However, unlike other headsets I've had, the switch allows you to power on/off so quickly that it eliminates the need for the Q2 to be on my ear to use the switch.  I don't have to listen for a power up/down signal. I know whether it's on or off by looking at the switch.

The phone was crazy-easy to pair w/my Blackberry, and it did most of the work itself.  I didn't even have to enter the security key.  My contacts were uploaded into the Q2 within a minute.

Now, as for the sound quality, it's simply excellent.  Clear, crisp, rich sound comes from the unit, and so far everyone I've spoken to can hear me clearly, even in my car or walking outside.  It seems to block outside noise pretty well, though I haven't tried very windy environments yet.

I really like the voice activated features and have been exploring them. The recognition is spot-on and rarely makes errors, at least as compared to my Plantronics 520.  Yes, there is a bit of a delay waiting for the Q2 to announce that it is "accessing your phone commands" when I do the pass-through to Blackberry's native voice-commands, but I don't find it bothersome.  I also like the ability to "answer" or "ignore" using voice, and it has worked well for me so far.

All in all, the best BT I've used to date.  Price is not too bad either.
I've had a few different Bluetooth headsets over the years, including the Plantronics 510 and 520, the Jabra BT8040, and a Motorola one, and the Q2 is by far the best. The ear loop helps keep the headset comfortably planted in my ear, and there a couple of different earcups provided to find the right fit. I haven't tried the ring/friction cups since I use the earloop. The unit is attractive and fairly lightweight, though I do feel like I have to be a bit careful with it so I don't break/bend the earloop when placing in my pocket. There have been some comments about the placement of the on/off switch, and they are understandable since it is a bit awkward to use the switch if the Q2 is on your ear, especially if you don't have long fingernails. However, unlike other headsets I've had, the switch allows you to power on/off so quickly that it eliminates the need for the Q2 to be on my ear to use the switch. I don't have to listen for a power up/down signal. I know whether it's on or off by looking at the switch. The phone was crazy-easy to pair w/my Blackberry, and it did most of the work itself. I didn't even have to enter the security key. My contacts were uploaded into the Q2 within a minute. Now, as for the sound quality, it's simply excellent. Clear, crisp, rich sound comes from the unit, and so far everyone I've spoken to can hear me clearly, even in my car or walking outside. It seems to block outside noise pretty well, though I haven't tried very windy environments yet. I really like the voice activated features and have been exploring them. The recognition is spot-on and rarely makes errors, at least as compared to my Plantronics 520. Yes, there is a bit of a delay waiting for the Q2 to announce that it is "accessing your phone commands" when I do the pass-through to Blackberry's native voice-commands, but I don't find it bothersome. I also like the ability to "answer" or "ignore" using voice, and it has worked well for me so far. All in all, the best BT I've used to date. Price is not too bad either.