I don't think comparisons with the Oppo 103 are valid anymore since the Pioneer is available for around $150 or so now while the Oppo is still $500. For $150 I don't think you can beat the Pioneer if you can find one, for $500 I don't think you can beat the Oppo. I love my 62fd. It makes the best sound I have heard from my system, and I picked mine up with remote for $125. I have never heard the Oppo, I am sure it is great but it was over my budget anyway.
The Oppo won't sound any different through your system. One important feature with the Oppo's is that the remotes are backlit and are better designed ergonomically, meaning ease of use and accessibility of information.