1. Same for both N73 & N80
2. Both are stable. But again the camera lag is terrible in N73 due to AF.
3. Voice quality is same in both. Music quality is same in both thru headset. N73 has stereo speakers which produces louder music but in my personal opinion N80ie speaker has better "quality" than N73.
4. N80ie is slider.. means bigger & better keys compared to N73.
5. Fonts are better & easy to read in N80ie due to the high resolution screen. Browsing the pages is fun in n80ie.
N73 screen is brighter but low resolution than n80ie.
rapolu which did you find was a better choice out of N73 and N80ie, some stuff that is of concern firmware buggy, battery life, camera, earpiece volume, which has louder speakerphone and lastly build quality.
6270 was designed badly. Not becoz it was a non-finland phone!
I owned 6270 for 3 days & got rid of it on 4th day due to the bad build.
I was hesitant to buy N80 as I was afraid that build quality may be like 6270. Now I own n80ie & I can say the build quality is the best. no creaks & the slider is smooth and has no "play". BTW this is Made by Nokia not Finland!