Samsung 40” full HD LED TV to swap for 50” or bigger Samsung HD Ready plasma

I have decided to get a bigger TV in my bedroom so want to swap my stunning Samsung 40” full HD Series 5 LED TV worth R8000 for a bigger (50” or bigger) HD ready plasma TV. I see the 50” Samsung plasma’s retail for the same or less than my TV but only want a straight swap. I am also willing to look at other brands ie: Sony, Hi-Sense etc. but do take into consideration that a cash difference then might come into play.
My TV still has its box, copy of the warranty, manuals, stand & remote so all accessories are included.
I had 2 of these Samsung 40” LED TV’s but sadly already sold the one as I find that because my place is darker than normal, that the plasma’s are more suited to my needs at this stage.
Please feel free to phone me on 0843039327 or email me at bulletgp@gmail.com
I am situated in Centurion and would prefer if the interested person would come to my place and test both sets before making a decision.