Nightingale! I love it more and more everyday I use it, and I've had it for a year! Even the medium is a decently big size, so it fits a lot...it's pretty nondescript and not too flashy...and it gets lots of compliments! :)
Givenchy! Great leather and workmanship, stunning bag! I don't have the Nightingale - I have the Avenue bag but it's made of similar leather and has the same attention to detail. It is really very well made.