In my opinion, go with Samsung. You can't beat their cost / value ratio. Great picture, etc. Sony is too expensive.
As for 1080p? I wouldn't worry about it unless your TV is a minimum of 40 inches. You won't be able to discern any tangible difference. Go with a 720p because that will give you the best price for the size and the 1080p is just pointless on a smaller TV.
If you're dead set on 1080p, I would roll with a 40-46" inch Samsung. Perfect size for a bedroom.