I have a 2014 335 & a 2011 535.
Biggest difference with iDrive is the new color scheme & round iDrive controller now has a scratch pad that you can use finger gestures to write on. I definitely like it a lot better.
Hope this helps.
I like to repeat with girls I've had fun with, but it's rare that the 2nd encounter is as good as the first.
Only exceptions for me are Katrina from GG, saw her 3 times and each session was better than the previous meeting.... I really miss her.