If you can wait I wouldn't be surprised if someone figured out how to transfer the WM2005 OS to an X30/High. After all, all that BIS has to be good for something. ;)
But you'd probably have to wait a good long while after it's officially released

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The dual-slots and vga screen of aan X50v are worth the little bit of money you'd pay over your X30's sell price. You can get a 6GB CF card for under $300 USD. The possibilities are endless...