The Canadian version still carries the GeForce 6600 (128MB) card.
There's still the same problem with shipping though, they won't ship outside of Canada, and worse, they won't accept credit cards from outside of Canada. :(
If you make a trip over there, it's not too hard to get them.
Re: getting them in Asia, I think (at least some of) the M4s are built in Taiwan, so a Yahoo (or Google) search for something like "toshiba asia pacific" or something like that should bring up the site that serves your region. They may even have a Taiwan/China site, but that's just a guess.