I am just starting my first build...a Weecade clone. Wondering what would be the best USB interface option for a 2 player/6 button setup. Taking into account price, functionality, and ease of setup, what is the best interface? I-PAC2, Mini-Pac, GP Wiz40, XIN-MO. The XIN-Mo seems like the best deal. Is it junk? What are the major differences between it and the I-PAC2 and GP Wiz? Also, are there any retailers that sell everything in a kit? (Interface, joysticks, and buttons) Thanks!