Oppo 103 SQ for SACD vs standard Denon 2900?

Does anyone have an opinion on the sound quality of unmodified Denon 2900 vs. an Oppo BDP 93/103 for SACD via 6 ch analog?

I'm finally looking to add Blu-ray to my home theater. My receiver is a Marantz SR19 EX, which, while still sounding great and pairing well with my Denon 2900, lacks HDMI video switching. I've held off because I've got an extensive SACD/DVD Audio collection, which sound great on my current setup (M&K S100b LCR and SS150 surround). I can't afford an HDMI switching receiver that comes close to the sound of my Marantz, and the upgrade to HD video was just not worth the hookup hassle.

Now that I'm getting on board, the Oppo 103 seems to solve several issues - outstanding video, universal formats, within my budget, and with 2 HDMI video inputs it will act as a video switch. My question is will the sound quality of the Oppo be at least equivalent to my Denon? I know the 105 would be an upgrade, but it is out of my budget and I am not looking for an upgrade, just not a degrade.

Thanks in advance for your opinions.