For all in ones, look at amp & speakers systems - ie no dvd player.
For ps3, to get hd audio from blu rays, look at systems which accept decoded uncompressed audio (linear pcm) over hdmi.
You don't need a system which decodes hd audio with ps3, as it decodes it internally and outputs uncompressed over hdmi.
Amp & speakers systems generally have good connectivity too - a few hdmi inputs, a couple optical, digital coax, a few rca phono.
To meet the above criteria, look at systems such as av63+, htddwg800, htss1300, htsf1300.