Hang on a mo.....you're watching TV through scart?
If so why do you want a 1080p TV with processing excellence when you're using pre-digital technology to watch an SD feed?
Unless i've missed something here.
I can't comment on PS's attitude, but you seem to be wanting something a porsche (that you'll only ever drive as punto speeds), on a budget.
You're also being uber fussy about your speakers. And has been said more than a few times, you'll not get great speakers on any flat panel within your budget. But you're only in a small room aren't you? (hence the small screen req). So you need to go to as shop that sounds like and indian meal and try out the relevant sized TV's. Get them to throw SD and HD down it. The shop near me is properly setup for TV demo's, it's really good.
Personally after looking at TALON1973's suggestion of the LG, i'd quite like one of those. IPS panel for much better viewing experience, wifi, smart tv, browser. Good deal if you ask me.
You rarely go wrong with LG panels, or Samsungs TV's as a whole.
As I said, majority will be Freeview (regular/hd), followed by sky over scart, followed by 1080p bluray/dvd.
My concern is those "monitors" just won't give as good a TV picture as a dedicated tv unit would!? Maybe this is wrong, as I it really is just a gut feel.
For some reason I just suspect that 720p dedicated Samsung TV would give a better picture for non-1080p sources than that LG monitor. If that's not the case, and the LG's speakers are fair enough, then it would be perfect of course!

