I must say I agonized over this for weeks when I was trying to decide which TV to buy. ÿDistance/size is very difficult to gauge in a shop - the 26" LCD we used to watch happily in the living room looked miniscule alongside all those alluring big screens! ÿI did finally overcome shyness and carry around my retractable tape measure and risked further ridicule by sometimes adopting a pretend sitting position. ÿWho watches TV standing up - how else can you achieve the right angle?!!
ÿI'm now extremely happy with my 42" HD Ready Plasma (Pioneer PDP-4280XD) at 3m. ÿA little further away (standing behind the sofa) is fine, but my surrounds can't go back, so 3m it has to be. ÿOn the other hand, even HD doesn't look as good any closer.
As many people have posted previously, it has to be a personal decision and you have to try things out yourself (preferably BEFORE making an expensive mistake!) ÿPersonally, an unhurried demo of the Kuro at HiSpek, sitting in a comfy chair set at my viewing distance made all the difference and gave me the confidence to get out the credit card. ÿReally think about what you want to watch - HD TV, SD TV, upscaled DVD, Blu-Ray....... ÿAsk the salesperson to show you each one. ÿIf he/she wants your business, it won't be too much trouble.