Lately i've come to conclusion that enjoyment of the features on android are pretty much correlated to how many of the Google apps you use and how often you use them. I've used every other mobile OS out there and the things you can do with android you simply can't do on Symbian or the iPhone. You're essentially running Google's version of linux on your phone. I really like the notification system and the fact that its now at a point where any feature you want on your phone theres an app in the marketplace that can sort you out. Want your text message conversations to appear in chat bubbles similar to the iPhone? Theres an app for it. Want different colored lights to blink to let you know when you missed something? Theres an app for it. Want to slice out any part of any mp3 and make it your ringtone? Theres an app for it. This is only the tip of the iceberg here.
Right now my biggest complaint is the battery life. I'm not sure if its an issue regarding how android uses the phones resources, but the battery life could use a bit of improvement. Other than that, I really enjoy everything the phone has to offer. It helps me stay connected and organized in ways that no other phone i've ever used has.
Again, the n97 is really nice. Unless you live in Europe and can get it subsidized, I don't think I would go with it over the G1. The G1 has just given me a taste of how awesome android is, and the moment I can get it on a phone with a better camera and better features, I will most definitely pick that one up.