[Tilt, TyTN II, MDA Vario III Accessories] RemE:
Got my Z9 and so far I have to say that I'm impressed. I downloaded and updated it's firmware from their web site. It was a bit of a project but the instructions were good. The Z9 is truely tiny compared to the Jawbone and the Z9 has many more call control features, controlled with button combination presses.

Fit for me is good, the clear plastic hooks are slightly less comfortable than the Jawbone but with careful adjusting while looking in a mirror can help you get a fit that works well. The Z9 weighs next to nothing and can be adjusted to be almost invisible to your senses. They give you two spare ear hooks.

Sound incoming is loud and clear and I do appreciate the dedicated up and down controls. I wear my headsets on my left ear so that puts the buttons on the bottom in my case which is not as good from an operational standpoint, especially when using button combinations.

Charging is done with a dedicated charger with micro usb type connector (looks identical to Jabra's). The Z9's charger is rated at 5v, the Jabra is 6v. The Z9 also comes with a micro USB to standard USB charge/data cable. The cable's have labels stating to ONLY use them with the Z9.

Noise Cancellation, so far so good. One difference from the Jawbone is that the Z9's noise cancelling is default at "standard" at call connect where the Jawbone's NC is "On" at startup and can be turned Off while in a call by pressing it's rear button (where you get a multi-tone indication that it's Off) The Z9's NC can be turned from "standard" to "Max" with a tap on the call button and it actually says "noise cancelling max" in your ear with a male Austrailian accented voice tag. A 3 sec press on the call button is needed to "end call". I called a friend with a Jawbone and did quality tests and was told that the quality was very good. I did walk around outside and the Z9 did fairly well in wind compared to Jawbone, maybe slightly better. I have not had a chance to torture test in the car at high speeds yet but so far I'm pretty happy.

Annoying Bits, should you walk out of range of your phone (eg. left phone on desk and walked out of room), the Jawbone gives a single "lost connection" tone while the Z9 gives it's lost signal tone, every 2 seconds, over and over for about a minute or two, then it powers down. When you are back in range it won't auto-pair like the Jawbone, you need to tap the call button to wake it, then it re-pairs quickly. Also I'm finding that the single tap of the button during a call (disconnects call with Jawbone, changes Noise Reduction Level with Z9) with the Z9 I often change NC level by accident because I'm so used to tapping the button to hang-up, they really should reverse the two features and tap-hold for 3 sec to change noise cnx level since it's not used as much as hanging up! At least we could rally for a firmware change:)

All in all for the price ($70 USD in my case) the Z9 is a contender!

Edit, after a few days use I will say that the Jawbone is the most comfortable. The Z9's clear plastic ear clip does hurt after a while, more than the Jawbone.

Edit, after driving with it a few hours today, well, it was better than my Jawbones! (and I love my Jawbones) It was way louder, in fact I had to turn it down! I called a fellow nit-picking, Jawbone using friend and did many in-car tourture tests, speed, wind, etc. The Jawbone might have a slight edge in noise cancelling but overall I was loud and clear to them and they were loud and clear to me.

So in my book both are great headsets, I'll keep and use both.