Hori Real Arcade Pro EX SA for 360

The Pro EX SE available for pre-order at Amazon right now uses Seimitsu part for the stick and buttons. This one, however, uses all Sanwa parts. The features list below is copied and pasted from SDTekken:

1. Sanwa JLF-TM-8T-SK-K arcade stick
2. Sanwa Pushbuttons OBSF-30 & OBSF-24 (Start/Back)
3. Xbox Live Communicator Port
4. Quick disconnects on wiring for buttons
5. USB wired for PC and Xbox 360 compatibility
6. Guide button for Xbox navigation

Button layout:
B X Y LB
A LT RT RB​

http://sdtekken.com/tech-area/arcade-sticks/hori-real-arcade-pro-ex-sa-special-addition-360/

Unfortunately, it is out of stock right now. I'm going to be watching this page often over the coming months. This stick was released exclusively at horistore.com on July 16, and there's apparently a limit of just one order per customer.

Advertisement:

http://www.hori.jp/products/xbox360/controller/realarc_pro_ex_sa/

Product purchase page:

http://www.horistore.com/shop/item_detail.php?id=807