My advice would be to wait. That's what I'll do. My N900 will hopefully stay with me until Dec 2011... and I simply expect the market to have changed by then. At least we should know at the end of the year if Intel managed to get some company interested in building MeeGo-phones. If not - well, that'll be tough then. Actually, it'll probably mean the end of smartphones for me personally, as I certainly never use an Android phone (and iPhone and WP7 aren't smartphone by definition).

So the future isn't exactly bright, but from what I know, right now is not the time to make any decisions.