Which is the best broadband hosting company in Australia for gaming?

I'm with bigpond at the moment, and they are giving me bad internet, I can't play my game, Minecraft because it lags on servers, not FPS, like, can't pvp because people feeze and stuff, which is the best broadband company for Australia for gaming? Somethign that will improve my ping to america and stuff. Do I complain to bigpond? On my router it says bandwith, 20, then 40, if I change it to 40 will it lower my ping?

Added (1). There's a BELKIN USB thing, If I remove it I don't get internet, is that causing lag? Because it's wirless

I think westnet is best company for it.
visit: http://www.westnet.com.au/home/ for more info.