We have the HDMI cables. We bought mid priced ones so as not to get super cheap, but also to not spend a fortune. they are only 6 feet, so shouldn't be an issue.
We use the PS3 as the BR player, as well. And all the settings were changed to 1080 immediately.
It's an awesome TV though. I almost want to buy another one (albeit smaller) for the bedroom. LOL. It is viewable from ANY angle (except of course from behind). but from the sides or head on, it is awesome.