Amazingly, we still haven't a 100% perfect emulator from this old console. I decided to put here some points about what I found using both the Stella ports: the old wii2600 and Retroarch with the Stella core 1.3.0 ported by @zerofalcon Screen Resolution - On Wii2600, the good thing is that when you choose a game, in 99% of the cases, the emulator choose the best resolution for each game. On retroarch you have to configure the best resolution on video settings, but at least, we have the double strike for CRT tvs. Sound - In both cases, sounds like the real machine, but on wii2600, on some games, we have muffled SFX (missile command, for exemple). Menus - Wii2600 is obviously better. The main problem in Retroarch is that the configuration of the controls can not be saved, and everytime a game is loaded, it's back to the its bad defaults. The "L" "R" difficult keys probably is the most annoying thing here. On Wii2600 we have all these options accessible with only one button, plus it's have the Z60 pallete option, to me, better then Stella's default. Accuracy - Zerofalcon's core is better. I will highlight 2 points: 1. If you play with wii2600 on CRT tv, some effects will be lost. The easiest to notice is on the Activision classic Enduro, your car whells will not move (this effect don't happens on my LED TV, probably because of the component cable). To solve this problem, we need a double strike resolution, and that is possible with the Retroarch. 2. The Atari2600 is very well knowned by the 'blinking' sprites in some games. Notable examples: Yars Revenge, Missile Command, Entombed, Venture, I Want My Mommy... The Wii2600 will ignore this effect, even if you use a Led with component cable. Zero Falcon's core is "the real thing". Technical problems - On wii2600, sometimes the menus got bugged, and we have to delete the configurations to back to normal. On Retroarch, a serious problem: It can randomly freeze your machine(specially when a pal game is launched). Well, everytime that happens you have to power off your wii... Final result: I want to to stay only with Zero Falcon's Retroarch because Accuracy+ Double Strike is everything to me, specially because I am using it on a CRT. BUT, sometimes I can lost my patience with these freezes and with the controller configurations. Well, if these 2 problems become solved, I will never use Wii2600 again XD . Plus, it can be a good extra if a option to choose the palletes be added.