What I have to say in general about the Integra 80.2 is that it is the standard-setter for (how shall I put this?) non-high-end processors. I have not used the 80.3 nor the Onkyo equivalents. All other general comments are in my columns about the 80.2:
http://forum.stereophile.com/content/music-round-49
http://forum.stereophile.com/content/music-round-50-0
Kal
http://forum.stereophile.com/content/music-round-49
http://forum.stereophile.com/content/music-round-50-0
Kal