My 6630
It's a keeper. Not perfect, by any means, but it's getting there.
Top things I love about it:
1) Camera. This is the best I've seen, currently on the market. The SE 700i is sometimes better, sometimes worse, but tie goes to the phone with the better os.
2) Build quality. I have not heard a squeak, creak, or jiggle emanate from its body, something you can't say about most Nokia phones.
3) Automatic email pop checking built in. Goodbye activemail.
4) Screen. Gorgeous, and a huge step up from the 6600 (just as that was a huge step up from the 3650).
5) Sound quality (receiving): loud and clear.
6) EDGE.
7) Automatic light sensor (helps save battery life by dimming the screen display in well lit situations).
8) Easily removable memory card. No more digging under the battery!
9) Lifeblog - great tool to manage content on the phone.
10) Bluetooth implementation - superior to mrouter/6600 pc suite. Connects more easily on my pc.
11) XHTML browser. It keeps getting better. Within a year, Nokia's built in browser will be better than the add-on browsers.
12) RF. I think its even better at catching marginal signals than the 6600, which was near the top.
Top things I don't love about it:
1) Bugs. Even though its the second firmware version (3.45.113), it still has problems (screws up in call display, combines first and last names when texting to/from someone in your address book, occassional out of memory warnings). When will Nokia get its act together with Series 60 software? This just is not what one expects from a top-shelf consumer product company.
2) Keyboard. This keyboard is a step down from the 6600, imo. Figure out what works best and stick with it!
3) Sound quality (outgoing). Not as good sounding as the 6600 (for people you are talking to on the phone) -- a little muddied. A later firmware upgrade provides a better gsm codec (I'm on T-Mobile US -- no wcdma) which could solve this problem.
I'd give it a 9/10 overall... for some comparison, I'd score a 6600 at 8.5/10, and a 6230 at 8/10.