Poco f1 is the best budget phone by Xiaomi which comes up with the snapdragon 845. I bought it on the last week from flipcart at 19999 Rs. From then till now I haven't noticed any bug or lag on this phone. I use this phone mostly for playing pubg. I used to play pibg on high graphics but phone doesn't show any lag or frame lag. Most impressive feature of this phone is its liquid cool technology. It doesn't let to increse the temperature of the phone even by 5 degrees even after playing high graphic games for atleast 2 hours. Also battery backup is very good. I am very happy with my choice.