The worst thing one can do is buy a house brand.

2 reasons

Warranty support on it is not good

you will always have some kind of problem with it.

if you want to use it for TV go for a plasma its got a better picture then lcd on all signals.

some ideas on pricing

SAMSUNG ps42b430 HD READY 42' inch going at R7499

LG 30pq50 50' inch R12999

other then that its going to be a personal choice at the end of the day.