Just got rid of my 745i for this car because maintenance costs for Lexus are much cheaper than BMW after warranty expires. BMW handles better, but bells and whistles are much more user friendly and updated in the Lexus (eg. touch screen, entry for nav system). Much more value in this car for the mone. Rides smooth, very quiet cabin.
Navigation system, also touch screen, Bluetooth, cockpit layout, roomy interior, good acceleration, intuitive layout of controls.
Need more storage space near dash, car tilts down and forward when hard braking. Larger cup holders, improved gas mileage, more comfortable seats.