Just wait. Even if the N920 comes in 2010, wait: their may be something better to come in 2011, perhaps the N9400.

Fellow iPhone user - went from the iPhone 2G (1st Gen) to the iPhone 3G, played with the iPhone 3GS (didn't keep it) and honestly - this is to the OP - I'd say wait. Avoid the N97, the N95 is a better phone imho... and the N900 is probably gonna be a problem if you're looking for a "perfect" experience.

There are reasons to be concerned, but I'd say wait if you could.

Well, to me that's not the point, waiting for the "better" device...
I don't think he's concerned with that since he's contemplating an N97 as well.

The most important thing is... Does it do what you need and want at this time? Or better said: what is the best device matched to your needs that is currently available?

Do you have a problem with some of the small features the N900 lacks currently? Features that some Dumb Phones even have, but the N900 does not yet?
If that is a show stopper for you then don't get it.

I would read extensively about the N900 and find out all it has and all it lacks before you make a decision.

This is as simple as it gets the N900 works as i expected the N97 to (naively i guess !! I hated it for 4months) buy the N900 if you want true web functionality and lots more...

(As a side note I have found a use for the semi pointless stand. To give more stability whilst browsing I open the stand and rest it between my index and middle finger works a treat!!

And there's no guarantee the N920 will have the same external features that the N900 has either. For all we know it could be exactly the same (with a capacitative touch screen instead of a resisitive one and a better CPU) or it could be more like the iPhone, a slate with no hardware keyboard, no TV out, etc..

It won't be till late 2010 that we find out. *shrugs*