This is my second Caddy. I owned a 2003 Seville SLS, what a perfect car. I looked forward to all the "goodies" in the 2006 model....WHAT A MISTAKE! The car is so sluggish; it remains in 5th gear most of the time. Press the accelerator and HOPE, then pray it responds usually won't. Bluetooth has no teeth. Frequently does not recognize phone, and does not work while driving. The voice recognition does not recognize ANYONE! Its gas mileage is only about 15 mpg. GM knows of the sluggishness and says "its up to specs" Your loss buddy. Just give me my 2003 SLS and we'll call it even. If you are considering a '06 STS V6 AWD, beware and test drive extensively first.
The handling is nice, style cool, and technology - if it worked - is great. This car is a good value if all of the options work.
The glove box not large enough for gloves, center console too small, voice recognition needs a lot of work, power/sluggishness NOT ACCEPTABLE at any price. Also, the seats a little too firm.