I got a 'free' 32" Sony beast as part of my new phone deal...felt a bit done with it though as the phone does some real fancy stuff, but none of it works on the tv.
Anyway, it appears to be ok, but given I'm staying in a 160 year old house with 2" thick walls, it doesn't pick up any aerial tv...so I've no idea how the picture looks, but when I do get my phone connected, I can share a film from it and the picture looks good and sound is fine.
Unsure why you'd need to go above 32" for a tv but I guess it depends on how much tv you watch - I don't watch much so have no need to sit for hours looking at it.
The tv I have in the living room has a built-in dvd player and gets used more often, so I'm going to be boxing the Sony back up and probably selling it.
Has built-in wifi but it won't actually connect to my hub, so I'm unsure what the wifi part of it is actually for. A real shame as I was hoping to get the benefits the phone gives me on the free tv but with a bigger screen (32" instead of 5")...it'll just go back in the box until I get round to selling it.