So, I took the plunge and bought the 51 inch HD ready version from FotoDiscount world, the series 4 D490, set it up last night, and WOW !
The picture quality compared to my brothers 47inch LG LED tv is awesome, no pixellation on normal TV channels off DSTV, and the HD channels are just awesome !
Thanks everyone for the suggestions and input, I'm very happy with my purchase right now. Now to change the crap Sinotec DVD recorder to something with HD, possibly even a PS3 as I don't really need the DVD recorder seeing that I have a PVR decoder for recording from TV. I'll keep it just in case I need to burn something to DVD though.