So we have decided that now that we can get 4K content, it may be time to update our 40” 3D TV to something like a 43” 4K model. I guess budget would be up to £700 ish and finding it impossible to know the best model for us. There are an array of different models and makes - none of which we can actually look at in a shop. So how do you buy? Any thoughts on what we should be looking for? Any advice gratefully received.