I'm from the city part of NY and I attend NYAF yearly with my friend (except last year when life held us up). We probably won't hit up any other major east coast cons as of now (fund problems usually but we might decide to go to one if we can arrange for it to be cheap enough) though we attend smaller events like Sakura Matsuri or college cons we're in the area for.
I'm trying to put together an official cosplay group with my friend. Right now it's just the two of us. But we're hoping to meet more people we can get along with and add them to our group =)