i also bought this unit about more than a week ago, at first yes medyo grayish yung black levels nya, siguro kasi bago. when i saw this kasi in abenson maganda yung black levels nya compared to the other led's on sale.
a week passed maganda na yung color at blacks nya and i was able to calibrate it properly according to my taste, tested it with several 1080p movies and it looks good especially at its price point. it is a good buy.
and maganda din performance nito sa cable, may signal booster something din to although i rarely watch SD channels na din. hehe. and maganda din sound nito for a tv with very thin bezel.