guys, i heard this phone casing is so fragile. err, im torn between x6 and c6. which one to buy for my gf. she did mention that she like c6 but her first choice was x6. now we both dunno which one to choose. i need positive and negative side about this phone so that it will be as clear as the glass.

what i need to know are:
1-touch responsiveness
2-apps availability
3- virtual numerical keypad responsiveness
4-battery life
5-loudspeaker quality/loudness
6-design/exterior
7-theme design (beautiful or not-the downloaded one)