Glad CMDRs are coming over! Will be in Group mode looking for you guys!
edit: this system, Iota Persei, is about ~70ly in Federation Space with rather poor trade routes in the vicinity. Still, I've been glued to this system because of the convenience.
To get wanted anacondas and other large ships to spawn, you gotta do a little cheat. As soon as you enter the RES, look for a wanted large ship nearby. If you don't see one, have all cmdrs in the RES go to super cruise and come back. Repeat this step until you see a large wanted ship in the vicinity. Large ships will now spawn at an unusually high rate. You can do this at any RES, but having Walker Station seconds away is very convenient.
edit: If by yourself, you can quit to main menu and come back to whatever game mode to refresh the RES as it is a little faster than going to super cruise.