I think the 134” screen is the perfect size for this distance. This calculator even says 15’ is the THX recommended distance for a 36 degree viewing angle for that size:

http://myhometheater.homestead.com/viewingdistancecalculator.html

The image is crystal clear and I’m not noticing any artifacts based size vs distance but I‘m not using an AT screen. If there’s one problem I’ve found so far its that will a screen this big that covers about 75% of the wall it lights the room up during any bright scene. I’m running it in eco-mode right now while using the computer and it’s so bright It’s like I have the blinds open w/sunlight coming in. I would not use this big of a screen vs room size if the walls/ceiling/floor are bright colours.

I’m looking forward to hearing about your projector, are you also getting the AE4000?

Cheers,
Dean


3M80 2M22 6QS8 2M2 1EP500 Sony BDP-S590 Panny-7000 Onkyo-3007 Carada-134 Xbox Buttkicker AS-EQ1