Castle Key bought one of the very top of the line Samsungs for his place last year... 75 or 80 inch...
It can be VERY disconcerting for a couple of reasons...
Watching older shows on it, stuff that you watched on the old Sony Trinitron in 480p, are crystal clear. It sets up kind of a mental dissonance. In one episode of Magnum PI I was streaming Higgins was holding a book. You could read the title on the cover of the book.
More than once when I've been watching a show on it (especially newer shows filmed in HD), the picture will suddenly jump out into 3 D at me. Yep, it's as if the picture comes out of the screen and into the room.
75" is really pushing it for my house, as well, unless I completely rearrange my living room (which I may very well do).
But, if I do that, I'm going to need to get some new furniture, and if I get new furniture I might as well get new carpet, and if I get new carpet I should really paint, and if I paint...
Holy hell, that new TV is getting expensive!