As a daily driver I'd go with the CLS, maybe the Bentley if you have way too much money.
BMW 7xx are known for their confusing user-interface and error-prone electronics, even in Germany. Porsche are nice cars, but I'd never get one for myself - just don't like their design. And a Lambo as daily driver is just insane...
Personally I wanted to get myself a SL500, but I just lost the money I wanted to spend on it, so I guess it has to wait a few more months. And I like my trusty old Jaguar anyway...