My two cents:
I think the voice recognition works fantastic 99% of the times. The one thing I did notice was that the noise reduction algorithm seems to work a little 'too well' sometimes. How well? The turn signal indicator and the wiper noise is a bit louder in my car than my wife's G37's. However, I can hear all her signaling and wiper noise clearly whereas she can't hear any of mine. But the down side of it is, when it tries to rub some of that noise out, it tends to rub some of the softer tones of your voice out as well. She reported that parts of my speech were staccato. I remedied this a good deal by adjusting the microphone sensitivity higher I believe? Can't remember the exact steps but I would search the forum on that and try it to see if it helps.
The only annoyance I see is the fact that you have to listen to all the junk the lady instructs you to say. I removed the speech on the initial press of the 'Talk' button through the menu system but after you input any voice command, it still makes you wait for the damn lady to speak what you already heard 1 billion times or it won't let you press the buttons you need to press. (ie. Dial by Number - after you input the number, you still have to wait for the lady to say the '##########, when you are ready, please press the talk button or press the off hook switch to dial'). And I think if you press the 'Talk' button before she finishes, it goes back to asking you for a number to dial... THAT'S frustrating.
I have an 08 350 and I'm extremely disappointed in the voice recognition system and you know Lexus has had a lot of complaints and yet they haven't done a thing to fix it. I can't understand it. Would I buy another one..NO, I paid good money for things to work properly, and that was the only thing that I'm very upset about. The processes to make a call, and no prompt for REDIAL????? I'd expect it on a chevy but the Ford Sync system is AWESOME. Can you imagine making a voice recognition system for a phone without recognizing the redial command???
