After test driving a number of sedans, I chose the TL over the Infiniti G35X. The TL is roomier and has a sporty ride with tight handling. (I loved the growling exhaust of the G35X but my wife thought it was too noisy. Oh well.) So far I haven't experienced any rattling and cabin noise which is a common complaint. I'm 6'3" and have trouble positioning the seat and steering wheel for optimal comfort. My hands and arms get sore on long trips. I'm clearly biased toward the Acura. This is the third Acura I've owned. I traded in a 1990 Legend. I hope to keep the '07 TL for many years as well.
Great acceleration even when cruising at 60 - 60 MPH. Smooth shifting. Under normal conditions, shifting is undetectable.
Telescoping steering wheel. Keyless lock and ignition.