I think the farther away you are the less noticeable the size become. So personally I would go with the PQ.
I am looking at purchasing a new TV and have narrowed my search to the Vizio E601i vs M551d models. I don't really care about the smart features or the 3D on the M series but it appears that there is much better PQ from the M series. The other big difference is the M series is 55" and the E series is 60" and costs $100 less. The money factor isn't that great and not a deciding factor. I sit 10'+ from the TV and its the size difference that is holding me back from pulling the trigger on the M series. I'm coming from a 32" set at the same distance so both will be huge upgrades from my current set up but I would like to make the right decision the first time. Does anyone have any advice on how much the size really plays in the viewing experience compared to the PQ? I'm dying to buy a new set so any help would be much appreciated. Thanks