I have a feeling my answers probably change every time, heh, but for now I'm going to say -
Season rankings - 2, 3, 4, 1, 5, 7, 6 (totally with you guys on the "dreariness" of S6, and S7 tried but there was just no coming back from the depths of crap that was S6)
Without giving too much thought to it (because I tend to overthink it and then get all indecisive), favorite eps, in order of season -
Double Date
Concert Interruptus
Bracebridge Dinner
There's the Rub
I Can't Get Started
Let the Games Begin
A Deep Fried Korean Thanksgiving
Those Are Strings, Pinnochio
The Fundamental Things Apply
The Reigning Lorelai