I've installed a few Parrot sets in some cars this past week and I've been impressed with them. Very crisp on both sides. I've installed the few models we carry at circuit city, and I've installed one from another source(I believe it was a 1400 or 1300 model) that had piss poor quality for the person you talked to(might have just been a defect).
Only downside I found with them is if you have aftermarket amplifiers, and a low end head unit w/o a mute button, those amped speakers aren't going to cut to the phone's audio. Also these also aren't compatible with a lot of amplified factory systems. I've rigged up a Camry JBL system to work, and I'm pretty sure other Toyotas and Fords will work as well(amp is easy to find and is either compatible with bluetooth harness, or can be tapped into). Possibly some Dodge/Chryslers. GMs, Lexus(Both usually bose amps), and higher end luxury cars don't even think about it. Get it with the car or your SOL.
I can post some camera phone pics of some I've done if you guys like. The installs thus far have been very clean and oem looking. I just wish I remembered to take more pics.
As for myself, I'm lost. I never liked wearing bluetooth headsets. I don't like how they fit, and I think people who wear them while not driving look like *****bags
. I also don't want to lose my iphone's huge LCD, especially when I use google maps a lot. My options are to configure a setup where I can visibly mount my phone, while having my shure adapter plugged into my deck's aux port. My problem there is having to turn up my deck to hear calls, then turning it back down before the music comes back on. My other option is to use the jawbone my friend gave me while still mounting my phone for google maps, and texting