So far, you're getting pretty consistent recommendations here. The only thing that I'd add is to definitely go check out these displays for yourself. You're looking at spending a lot of coin on this thing, and you'll want to be happy with it (well, your in-laws will). That way, you can check out the size/performance differences for yourself. Also, consider any glare off of the screen if this will be in a room with a lot of ambient lighting (such as windows).