Well I installed my TV yesterday and I have to agree with Digi247, bigger is better, I am so glad I didn't go for the 32". Four of us sat round the TV, all about 6' away and the picture is brilliant, in fact better than when viewed in the shops. I think LG have done a great job with these new passive 3d TV's and the connectivity is superior to others of the same price. Will be sitting down with the kids later to watch Madagascar 3d. Another thing about having passive 3d TV, is you don't really need to worry about the kids or animals or even us adults (when we've had a few beers), damaging the glasses, as there as cheap as 99p.
Also to add to this, my PC streams the 3d videos with no problem at all, just send it to the TV and then press 3d button on remote, and these LG's give you 5 options of viewing, so flick to the one that shows it correctly.
Anyone interested in buying the same as I have LG model. 42LA620V, Pixmania.co.uk (which is basically Currys, Dixons & PC Worlds online store) are doing an offer on this model £449 incl delivery.