Which one is the best? for PS3 and analogue/digital TV. I don't know.
I was trying to decide not too long ago between the Sony and the Samsung models that you have listed. In the end I went for the Sony 32V5500 after reading many reviews and comments from people who own the Samsung saying that it has really bad input lag.
Personally I would advise against the Samsung because of the input lag and you have said you will be using it with your PS3, although it's all about your personal tollerence of input lag, it may not personally affect you as much as the next person. I can't really comment on the Toshiba, all I know is that it is cheaper than both the Sony and Samsung.
I would recommend the Sony 32V5500. Mine arrived this morning after ordering it on Thursday, havent set it up yet as havent got much time today but once I have I will let you know what it is like!