You'll need an Xbox or Xbox 360 running custom firmware to dump games.

Due to how the data is laid out on-disc, it's not possible to rip them with a normal PC drive. The other big problem is how annoying it is to get games to test with. All the exclusives are on Sony/Nintendo consoles, and they can emulate the multiplats too. The big problem is the same one facing Xbox emulation: no-one cares. It has far less compatibility than Xenia, and probably isn't the better option, but it's certainly an interesting one. There was also quite recently redex/recompiler, which doesn't emulate games, but converts the entire thing into a native binary ahead of time. You can find a list of playable games here, and it gets a hell of a lot better performance in RDR than rpcs3 does (but is also really broken). Xenia is progressing a lot farther than most people realize because the devs have no concept of public relations.

Well, there's only one answer to each of those questions: Xenia and RPCS3, respectively.

What 360 emulator is the best for mac