If want to clean the dust / black spot from NEX sensor, use 3M Magic Tape to stick the dust out from the sensor, don't use Lenpens or cotton tips to clean, those will scratch sensor surface...
 

Tried HTC One tonight, everything is good and better than Xperia Z...





support HD my TVB







screen color is better than iphone and Xperia Z











 some photo taken by HTC One:

























 went to AKB48 HK official shop after work today











Too bad they not allow to take pic in the shop

Conclusion: nothing special in the shop, all items are very expensive...staffs so free (not busy at work)