I used the N97 for about 4 months before selling it off. It was a nice phone all around and had plenty of apps for what I needed. However, it was sluggish if you had the screen full of widgets and I was not a fan of having only one "screen" to use as opposed to the N900 (and Android) having several. Furthermore, the N97 was buggy and would crash more than I'd like. Each firmware update helped but it was never bug free for me.

I've had the N900 for about a month now and it's nice and snappy. If the N900 had greater app selection it would be perfect for me. One thing the N97 did have over the N900 is that the email application was very fluid. The N900 takes forever to update the emails. I have to wait literally 1-2 minutes for it to finish updating for even 3 emails.