Hands down Ebbet's Field. They have done collabos with everyone - even peopple like Flight Club.
I have a San Francisco Seals hat, an Oaklan Oaks Hat, and a Brooklyn Bushwicks hat and they are amazing. Highly highly reccomended.
I am big in the invite-only private bittorrent tracker community. Happy to be of help and **** if any NTers need invites and know what they're doing, etc....