I own this mobile since last one year. Three of my friends bought the same mobile after I bought it.
Good words for this mobile:
Wonderful sound quality (the best)
Dust proof, shock proof, water proof (to a good extent). I never intended to try out these features, but afer one month of owning this mobile, I was not so carefull about handling it. It has fallen from my hands at n number of occasions with different levels of impact. Once it has even fallen from a moving bike on the road. Thank got it has a cover on else I would have got scars on it. No change in the performance till now. It has got wet many times as I hook it on my belt and drive my bike and I love riding bike in rains!! :D
Inspite of no antenna, the phone receives signal in even those areas where other fail to.
Not so good words for this mobile:
Menu navigation not as user friendly as nokia mobiles.
The backlight illumination is not very good
Ring tones are not very fancy
Battery charging is good, but you put the mobile on charge for 15 mins and switch off the charger. the mobile will show full charge. make a long call and you will know
Mobile skins are not changeable like those of nokia.
Buttons are rubbery.
Overall, if you are looking for a reliable, robust, sleek mobile with all the required features, then this is the best choice.