This is super tough. They're all really great. But for me, it's gotta be:

1. Moonrise Kingdom
2. Rushmore
3. Fantastic Mr. Fox
4. Grand Budapest Hotel
5. Bottle Rocket
6. Darjeeling Limited
7. Royal Tenenbaums
8. Life Aquatic with Steve Zissou
   Again, super tough. I really enjoy all of them.

It's strange. The list of his films is always only provisional for me.
I mean, all of his films are great, but, for example, "The Darjeeling Limited" was "only" the fifth or sixth best Anderson film for me. Then I saw it again and it promptly went up the list. Last week, I saw "Fantastic Mr. Fox" which I didn't like as much as other of his films (when I first saw it) such as much as Budapest or Tenenbaums or Steve Zissou and, bamm, after seeing it again the other day, it climbed up the ladder, like instantly.
He is one of those who will never make a bad movie. Never.

The Darjeeling Limited
Rushmore
The Grand Budapest
Moonrise Kingdom
Fantastic Mr Fox
I've yet to see the rest.

Life Aquatic is the rare movie that for me gets better with every viewing. When I first saw it I wouldn't place it in my top 100, now it's in my top 10 most days.
Murray deserved some kind of award for that movie.

1. The Life Aquatic with Steve Zissou
   A+
   my #11 all time
2. Rushmore
   A+
   my #30
3. The Darjeeling Ltd.
   A
4. Bottle Rocket
   A-
5. Moonrise Kingdom
   A-
6. The Grand Budapest Hotel
   A-
7. Fantastic Mr. Fox
   B+
8. The Royal Tenenbaums
   B+
   My listing's also changed before. I actually flipped TLA & RM on my top 50 more than year ago; I grew out of Rushmore a bit & grew
   into
   Life Aquatic, probably literally & figuratively.
   Used to have Budapest ahead of Moonrise, yet I've grown to love MK's summery forests & waterside locales, + Bruce Willis' Captain Sharp is excellent. I need more Budapest viewings, I only had the single theatrical- waiting for Criterion blu, no more double dipping.
   top 50 http://www.imdb.com/list/ls056413299/

It's hard because the order always changes around for me, depending on my mood at the time

1. Royal Tenenbaums
2. Darjeeling Limited
3. Grand Budapest Hotel
4. Life Aquatic
5. Rushmore
6. Bottle Rocket
7. Moonrise Kingdom
8. Fantastic Mr. Fox

For me it will always be:
1 - Moonrise Kingdom
2 - Grand Budapest Hotel
3 - Rushmore
4 - Fantastic Mr Fox
5 - life Aquatic
6 - The Darjeeling Limited

1 Moonrise Kingdom
2 Grand Budapest Hotel
3 Fantastic Mr Fox
4 The Royal Tenenbaums
5 Rushmore
6 The Darjeeling Unlimited
Haven't seen Life Aquatic and Bottle Rocket yet.

1. Rushmore
2. Fantastic Mr. Fox
3. The Grand Budapest Hotel
4. Life Aquatic
5. Moonrise Kingdom
6. The Royal Tenenbaums
7. Darjeeling Limited
8. Bottle Rocket
   Not to say that I wouldn't drop everything to watch any of these films on any day.

At the top is Tenenbaums, at the bottom is Bottle Rocket. The rest are a jumble of awesome in between. Grand Budapest is near the top of that jumble and Darjeeling Limited is near the bottom. But all good.

1. Life Aquatic
2. Rushmore
3. Tenenbaums
4. Mr Fox
5. Grand Budapest
6. Darjeeling
7. Bottle Rocket
8. Moonrise Kingdom

I still need to see Bottle Rocket, so my list only has 7 films:
1- The Darjeeling Limited (10/10)
2- The Grand Budapest Hotel (10/10)
3- Fantastic Mr. Fox (10/10)
4- Moonrise Kingdom (9/10)
5- Rushmore (8/10)
6- The Life Aquatic with Steve Zissou (8/10)
7- The Royal Tenenbaums (7/10)
I don't really know why but The Royal Tenenbaums doesn't really stand out to me as Wes's best. I feel like The Darjeeling Limited is seriously underrated.

1. The Royal Tenenbaums/The Fantastic Mr. Fox. I can't chose between these too. Mr. Fox is the one I've watched the most, but I think Tenebaums was his best work.
2. Rushmore
3. The Darjeeling Limited
4. The Grand Budapest Hotel
5. Bottle Rocket
6. The Life Aquatic
7. Moonrise Kingdom
   Can't stop the signal.