I've been happy with this 'new' E90 which replaced my first E90. Previous one has this microphone and markings on inner screen syndrome. This new suffers no such failures or at least I have not been able to detect them yet.
But when running business with E90, you try to keep charger ready where ever you are. This picture is in Brussels, where E90 needed some juice before 5 pm, after I had unplugged it from my hotel charger at morning.
So, prepare to bring charger with you on those daily trips where you just imagined to survive without that laptop and charger :)