I gotta say FanimeCon! It was my first con and next year will be my forth year attending. Also, for easy transportation, good places to eat outside and, great places to shoot. SDCC is probably going to be my next con. In your opinion which is better NYCC or Katsucon? I want to go to both but I want to know before I jump on a plane to the east coast.
Katsucon is a million times better in terms of cosplay/being able to hang out with your friends in a lovely convention center/area. NYCC is only good if you're really interested in the guests and artists they have there, since they get some really awesome comic guests - it's pretty awful for cosplaying, and its location is alllll the way over on 12th ave which makes getting to it a massive pain in the ass. Katsucon is way better than NYCC in my opinion.