This weekend I received my Kenwood head unit from UPS. I was able to get it in the car in less than an hour.
This thing really was a breeze to install thanks mostly to the easy removal of the WRX's radio bezel. Another factor that really helped was the Crutchfield wiring harness. All of the colors on the wiring harness matched up with those on Kenwood's wiring harness.
I used the mounting kit from Scosche. This kit is 100% plastic like most mounting kits so I was a little worried when it came time to secure it to the head unit. Everything went off smooth and it looks GREAT. This is no doubt the best looking mounting kit I've used. Not only does it look great, but the fitment is perfect.
I probably would have used the JDM bezel had I known about it before I ordered all of my stuff.
The 9140 comes with a microphone and a PTT button for voice recognition. Due to the awesomeness of the WRX's dash construction, I was able to run the mic and PTT button to the steering wheel without removing any additional dash pieces.
I also purchased the iPod cable to go with the unit. I ran the iPod hookup and spare USB port to the glove box once again removing only the radio bezel. I am officially disk-less. 120GB iPod is all I need to rock out! The iPod interface on this unit is stellar, better than any I've used in the past. I can random play all, it displays all the proper artist, song, and album info. The unit lets me control everything I can do with the iPod.
The 9140 also comes with a magnetic Nav antenna. Kenwood includes a small magnetic mounting pad that is sticky on the back. This is to mount the Nav antenna to plastic and it works great! I put mine under the dash behind the gauge cluster and the signal is good.
Overall, the head unit is top notch. There are some things I would improve on but much much less than other comparable head units. The Nav interface is top notch. The customizable settings are overkill and that's what I like.
There is a very nice equalizer for all three audio channels (F,R,C). If you or a friend know how to properly tune this head unit, the sound is AMAZING! I was originally planning on replacing the stock speakers but now I don't have to. I'm probably not an audiophile but there is definitely a threshold I cannot deal with. The stock speakers with this head unit (properly tuned) are way above.
Some friends and I went to the drive-in last night and saw Terminator. All I have to say is OMFG! The Dolby surround movie setting is astonishing. The experience is just wow.
The Bluetooth hands free calling is great, I haven't had a single complaint about the microphone yet. Everyone can hear me nice and clear even with the windows cracked. My only complaint about the voice recognition is that it doesn't like Pittsburgh'ese!
Honestly, this head unit is well worth the money and I would recommend it to anyone that is willing to pay.