As above,emulated servers are at the moment better than "official" private servers.
Simply you can have fun there,you don't really need to grind like hell and these are not as corrupted as normal ones.
I agree that not everything works fine,but emulators are being all the time upgraded and they're more stable every update(example: srevolution0 and soon maybe we will be really able to play on emulated servers like in WoW[functionality & stability very close to global servers(except dungeons and such)].
Which emulated server is the best? I'd say xsense's one. Led by professional team & creators of srevo.