I own a k3 note. I have been using this phone now for atleat 6 months. According to me this is the best phone in its price range. It is available for Rs.10000. It has got a full HD 5.5 inch screen with front and rear camera of 5mp and 13 mp respectively. The camera provides decent quality images and specially the selfies taken are awesome.
The camera sensors with the dual LED flash provides spectacular images as compared to the phones in this price range. The phone is really fast because of octacore 1.7ghz processor inside it. It supports 4G too. The only drawback that I found was about the battery backup. The battery is 2900 mAH, but still cannot provide a long backup.
The phone requires to be charge 2 times a day if used frequently, especially if in the 4G and 3G mode. There have been recent complaints of the heating problems, but I did not come across any such problems. All in all if you consider the phone, the lenovo company has done a splendid job especially by giving so much specifications at such a low price.