Hi, I bought a Nokia 6610 just about 6 months back and have found this as a fantastic piece of instrument.
Following are the point I noticed about it till now:
Plus Points
1) An Elegant Sleek Body
2) Soothing Color Screen with beautiful color combinations
3) Fantastic Keys - very smooth and you can SMS all day long
4) Good Loudspeaker facility, so that people can talk like using a Speaker Phone
5) Good value for money. I got it for 8600 from Pune
6) Side Volume adjustment to increase/decrease the volume
7) MMS Facility and Polyphonic Tones
8) GPRS (Have yet to try this feature though)
Minus Points
1) I did not find the built in FM Radio that useful. It would be better to have a separate unit rather than having this integrated with the instrument.
And thats it not much negatives about this instrument.
That was a short and point to point Review according to the experience I had till now. I have not faced any problems till now. Will update more when I find more about this cell phone. Do let me know your thoughts on the same.