This is the second Q45 I've owned and I love it! The ride is very smooth and comfortable without being too soft. Lots of power when I need it. Can't bear to trade it for a new one at current car prices. I've put 67,000 miles on this car and nothing has gone wrong. You can't beat the Infiniti service department and the loaner car program. The customer service is excellent!
The sound system is wonderful. The soft interior lighting at night is soothing. Can't beat the comfortable ride on the highway.
Only complaint is the wind noise from the sunroof at freeway speeds.