I'm just gonna leave 11 out of the running for now - I love him, I think he will become one of my favorites, but I can't honestly say if my view's just being colored by stronger writing than we got with a lot of RTD's episodes. I think McGann would have made a really great Doctor were he blessed with halfway decent writing and a longer shot at the prize, and I think the reverse holds true - great writing does not necessarily make for a great Doctor (as a friend likes to say, during the 80s the stories got better while the Doctors got worse). My picks might seem a lil New Who-centric, but I grew up on the stuff and Pertwee was only barely edged off this list.
Sooooo...
BRONZE:
10! Talk about the writing not making the Doctor, Tennant could carry some awful stories on his awesome Doctor-ness alone. I really appreciate that his emotions only came in broad, bold strokes, which made the rare subdued times (Human Nature!) stand out amazingly. He was volatile and I loved it. Even the begging was without a touch of shame because that was in his nature too.
SILVER:
4! Everything that could be said about Tom Baker's performance probably has been said, but personally I loved that, no matter the situation, dude would just roll with it. Never slowed down even once. Tennant used the trick a lot - "It's hopeless, there's no way out, our fates are sealed - EXCEPT THAT I, THE DOCTOR, HAVE JUST SCIENCED YOU IN THE FACE WITH THE ONE TINY THING THAT YOU ARROGANTLY OVERLOOKED!" and then the day is saved and here comes the awesome pithy rejoinder - but Tom Baker pioneered it and pulled it off more smoothly. Also? I like a Doctor that will straight rough up a guy if it's the right thing to do.
GOLD:
9! I just fell in love with the idea that, off screen in all of those years without a Doctor on tv, all of the crazy shit in his universe came to a head in massive, insane, impossible ways (the Time War was always more than the Time Lords and Daleks, and I wish they'd have gone into this more, because when described it comes across as literally being Hell, this endless inconceivable carnage that perverts the nature of the universe but you, living your life on Earth, can't see it even as it happens all around you. But anyways, I digress!). Now here is the Doctor as the lone survivor, a man trying to replicate his old trademark youthful exuberance as a way to mask the serious PTSD, because he pulled the trigger that killed nearly EVERYTHING that defined him and has to live with it. But then he meets some kids with actual youthful exuberance and his own joy starts becoming real again and every time he said "Fantastic!" I got a genuine smile on my face because fuck yeah, it IS fantastic, and I couldn't be happier that you've learned to see that again. I'll admit that he might not make the top spot without my own bias - I was watching this guy learn to live again at the same time I was coming out of a big depression - but, hell, that Doctor and that time in my life are linked and it's a good thing. And it was goofy as hell sometimes like Doctor Who should be, it wasn't some incredible Shakespearian tragedy for the ages, but that's exactly why it embedded itself so hard in my mind. Dude just remembered - he can dance!