I would agree with Joy...
I bought a 97 740 IL about 2 years ago and absolutely love it. My driving is mostly highway miles. And I have had some repairs to do. But this car has been the easiest car to work on that I have ever owned. It is a pure joy and I will continue to repair the problems as they arise. And contrary to some peoples posts (not so much here) the parts for these cars are not terribly expensive if you spend the time to search them out. Do your research, and read up on common problems with these cars. By doing some research before your purchase you will know what to look for when you go test drive one..
Good luck, these cars are amazing and still stylish to look at, even 15 years later in my case...
1997 Black 740IL (w\ badass Phone in console)