Whew, I was worried by poms you meant us Americans, who of course speak perfect English. Much improved over the version the UK gave us to start with, and while we may not have as concentrated diversity of accents as Scotland, we do have a wide variety. Its kinda fun to slide from one to the next in conversation to see if people notice, and what their reaction is. People typically think I have no accent at all (I adapt quickly to others in the conversation - let that be a warning to ye felix, get me drunk and I'll drown you in a Scottish or Irish accent...I'm not sure which but it sounds perfect to me), though I have a very Southern accent when talking to someone from our South (where I'm from).
But this isn't about yanks, or our damn accents. This is between poms and aussies....and I'd have to give the nod to aussies being more tolerable in general when it comes to English.