I don't think I would have bought any of these.

I would never buy an Iphone. And the N97 has been rather bug ridden, I suspect I would pick the N97 Mini over it. The HTC HD2 runs a EOL Windows Mobile version, and the new Windows Phone 7 seems to be a wrong turn for me.

I think I would have gone for Android. However, Android is closer to the N900, so I guess it wouldn't fit your needs? At this time, either Android or a Series 60 phone that isn't the N97.