the new BMW 5 series F10 is pure win, ain't seen such a good car comming from BMW, since the e39 M5.
BMW has always been the best in the 5 series category, vs teh A6, and the E class, EXCEPT the 5 series which came out in 2004, the E60, that was definitely BY FAR THE WORST 5 SERIES EVER, featuring a crappy interior, despite the nice exterior, and uncomfortable leather, and borign interior once again.
The E Class is DEFINITELY the worst car between the 5 series and the A6, since the year of 2002.
Im not so sure if the new A6 continues being better than the 5 series, since the E60 5 Series was a fail, ive been in both already, but cant really tell which is best, really liked the F10 5 series, but really liked the A6 too, some reviewers say the A6 is better, some defend thee 5 series, need to go on a big ride on both to tell.