I've read lots of praises for the Jawbone version 1 and 2 all over the forums. Just wanted to share my honest research and opinion with the headset. I got the Jawbone 1 last year and would never use it, as it was quiet a hassle to get it on. went back to my trusty cheap nokia HDB-4 wired headset which sells for $8 and has a decent to good clarity. Fianlly with all the hype on the iphone, I couldn't hold myself and finally took the plunge with getting two iphones for myself and my wife. At this point I decided to get the jawbone 2. Review: Fit it very comfortable. Sound not so good. It sounds like people are talking through a pipe. Echo can be heard at the other end and a little at my end too. Its hard to understand the person over the headset. Construction on the jawbone is downright mediocre So decided to give the sennheiser VMX100 a try from the Apple store since I have the PC headset and the mic for voice chat and that is by far one of the best headsets and mic I've used. A bit pricey but its worth every penny. As for the headset, my perception is that this headset gives a breadth of clarity with voice. I mean the sound is a whole spectrum. However I would have liked it slightly better if it would fit in the ear as the jawbone' but that might just be a factor to get used to. Construction on the VMX100 looks quiet good. I'm quiet picky with the stuff I get so its hard to please me. Just my honest review. Hope it helps someone. PS: I'll be returning my Jawbone 2 tomorrow and hope ATT takes it back as I'm not satisfied. I might land up trying the platronics headset to see the clarity on that too. ** Note: In effort to keep this post short and simple. I'll update the header thread with my findings and snippit here Tests done: * Called my home number. * Left Long tonal voice mails to my home answering maching. (I figure I'd be my best critic) * Switched on the fan to emulate outside air sound (Thats the best I could come up with) Jawbone 2: (Got from ATT Store) * echo in sound clarity * Receiving end sounds aren't clear * Result: Returned it on 08/02 to Att Sennheiser VMX100 (Got from Apple Store) * Good Base receiving quality * Sound qual on other end is slightly just slightly lesser/robotic when compared to Plantronics 925 * Good boom style fit, nothing inside ear * Result: Returned it as i feel the sound is robotic Plantronics 925 (Bestbuy store) * Good Treble receiving quality * Sound qual on receiving end is todate the best I've tested with. No robotic sound at all * No boom but fits in the ear just fine. the box comes with 2 size to fit * Result: Kept it. Ordered another one on buy.com for 86$'s for my wife. ** The voice quality of this headset was exactly the same as the iphone itself. People couldn't distinguish if I was on a headset. Motorola H710 (Bestbuy Store) * Opened the box * Tried to see how the fit goes. Ugly, feels like a cheap product. * Result will definately return it but no hurry. I have 30 days.