Hi I have a 42inch wide-screen by Samsung. Picture is great, sound is very variable, sometimes great sometimes dodgy. I assume I will need to buy a decent surround sound system. Do I go for a Samsung home theatre system (dont really need player as use ps3 for blu-ray) or 3rd partt alternative. Wireless speakers would be an advantage, crystal clear sound for telly and all round sound for movies is essential. the room is 7m x 7m thanks in advance any other alternatives considered.