In the 2006 model year, you can get nav in regular GT w/ auto (which is exactly what I have). My heated seat controls are about where the i-drive is in the 2007. Speaking of i-drive, I had a similarly excited sales manager talking it up... I assumed it was less totally awesome than he claimed, but I never really looked into it (it's new for 2007, and I wanted a deal on a 2006). My dad also thinks it's cramped, even though he's not all that tall... no one else has complained yet, and my impression is pretty middle-of-the-road. My experiences with rattles and stiffness are about the opposite. Or, maybe I was just used to the Mustang Seriously though, I haven't had any issues so far with rattles/squeaks (3k miles), and if anything I thought the damping was a little on soft side. Although, I'm not really judging that on a luxury car scale, so you probably have a point
Coolest car ever? Of course not. It has it's place though, and for what I needed and was able to spend I am happy with it. Now, if I could have afforded a TL or the like... who knows.