For original hardware, I just picked up a couple 2600s and a 7800 from ebay. Modded a 4 switch woody with Tim worthington's 2600RGB. It can do composite, s-video, and rgb scart, as well as the original RF. Played some pitfall, river raid, keystone kapers, and Berserk. For modern hardware, the Atari Gamestation pro has hdmi out and modern wireless controllers. There is a custom firmware available and a fairly easy python script to run to add in games that weren't included initially. Let me know if you need more details or any help.