You should know the output of cable tv is no more than 240p thats it, the tv that is provided by PTCL Smart Tv is 360p or 480p so buying a 1080p Full LED etc wont matter anyway .
If you want to watch Netflix then yeah better resolution TV will matter.
Dont go for malaysian crap ever they give warranty but they break down within a year and have so many other problems as well.
Either get a smaller 40 or 50 inch Samsung that is in your budget you will compromise on screen size but good quality or get a projector and compromise on resolution