Thank you for your feedback guys, you did help push me in the right direction. Tried three TL's in the last few days, impressive, but slightly weird as well. So far, my longest experience in a TL was for a 15 minute ride. Having now tried several, my impression did shift a bit. The car is solid, excellent build quality (although I did notice the "rattling" issue in one), but it drives kind of strange. It's the steering that I found to be quite a "turn-off", since it was seamless, void of any steering feeling whatsoever. The same on all three. At the moment, the car exhaust, ride and excellent overall value is keeping me from turning away, but I do have to admit though, I'm slightly disappointed.
The search for "My TL" continues, despite the numb steering. Thanks for helping.
PS: the most serious contestant so far has 65K on it, everything else - navi = $18.9K. A bit on the pricey side. The other two were in the $16.5K, $17K range respectively, with 90K km, 85km.
UPDATE: found another 06 TL for $13.9K, but has 150K. Not sure if that may be a tad too many km's for this one, although the price is quite attractive.