I've just replaced my trusty old Becker Traffic Pro with a Pioneer AVIC-F910BT Double DIN unit.
The Becker was originally bought because of it's OEM appearance and hidden talents, namely European Sat Nav but an Aux-In was stretching it and you forget bluetooth...so the hunt was on for something a little more capable.
I'd settled on this Pioneer because of it's looks - and had even turned down the newer model (the 920) because the buttons had been changed so looked a lot less integrated.
It even has a 'Splashscreen' which I've already customised - so you have a Porsche Logo displayed whilst it loads up!
The other thing that makes the difference is the mounting frame - the surround used came from Loi - EuroMotorspeed and isn't the one that comes with the Head Unit and the differences are obvious. Yes you need to trim away a tiny bit of plastic in the interior frame, but this very solidly constructed frame with metal powder-coated surround (complete with Porsche sticker) with an exact fit, no gaps and perfect cosmetic integration absolutely makes the installation. Expensive, but worth it IMO
The Head Unit itself is as awesome as expected: Full Euro Sat Nav with voice control, routes plannable on Goggle Maps and then downloadable via SD Card, 3D picture representation of famous landmarks, CD/DVD playback, SD card slot (MP4/AVI) USB Socket, 3.5mm A/V Jack, USB Socket, Spare AV input (I'm going to add a Freeview tuner) and full iphone/ipod control on the touch screen, so all your playlists, album art etc. are on the screen. Not to mention bluetooth and it reads you your SMS messages

ANd future proofing is built in because all firmware/POI database and Sat Nav updates are loaded on to a USB/SD and and transferred to your Unit.
I'm sure there's much much more - the manual is 140 pages, but having been at Silverstone all weekend, I'm only now starting to pay with it.
First piccy: