OK, so I read many reviews and some interesting comments around slow start up and not happy with the sound quality. My experience, its starts very fast unless its updating. Its android so you will want it to update and the delay is approx 1 minute and in the past two weeks its happened once. Picture quality, I replaced a 200mhz LED and from the day it was delivered was never happy with the panel black contrast, the panel was always grey. Another issue was the motion flow. 200mhz was supposed to fix that, it didnt. The TCL is smooth and I have not experienced any issue with picture quality, in fact the picture is superb. colour, contrast and motion flow is excellent. Sound quality, its not a Bose or Sonos surround system but for 80% of viewing it is absolutely adequate.