I bought my 750iL five years ago on eBay. First I test drove the 740 at delaer but it lacked power and acceleration. Thought the standard features like 12-cylinder engine, GPS and double thick glass made it a good choice. I love this car's performance! Sound system is the best I've ever owned. I commute 100 miles a day on the highway at 80 mph and it feels like I'm taking a race horse out for daily exercise. Have put 70K miles on the car since owning it and plan on driving past 200K. My only reservation is that it has cost me dearly to maintain at the dealer. Too many things needed fixing to detail here but all told I probably have put at least an additional $10K into maintainence.
Power, comfort, sound system
Had to buy a cup holder and mount next to the shift lever to accomodate large cups. Console cup holders are small and in the way of controls.