I think mine would have to be a toss up between Uncharted, Killzone 2, Ratchet & Clank and Prince of Persia...

Wondered what everyone else's opinions would be of the best game so far?

I loved the 1st Resistance, but Killzone 2 just became my fav.

I know what you mean, the first Resistance was a classic... Not the best graphics but the story was great!I hope that the 3rd one will be just as good as the 1st and 2nd (we all know there will be a 3rd)

Although its pretty sudden but Resident Evil 5 is my favorite game so far.

Uncharted for me.  I'm totally loving Killzone 2 as well.  Close to Uncharted would MGS4, Resistance, Motorstorm Pacific Rift (damn good game), and Ratchet.  I like Warhawk too, but man I wish it had a single player campaign.  There are a lot of great non exclusives too, but those are my favorite exclusives.

i only bought 1 ps3 exclusive and i dont really like it.... killzone 2

@drakes

I have never played Motorstorm: Pacific Rift as i thought it can't be that different to the original... i guess my assumption is very wrong then?

its between Bioshock, MGS4, KZ2, Resistance and Dead Space.

Disgaea 3 with Valkyria Chronicles a very close second.

Metal Gear Solid 4.

Honorable mentions:
Ninja Gaiden Sigma, Oblivion, Killzone 2, LittleBigPlanet and Ratchet and Clank Future.