For the price I am very pleased with my Oppo
So if money is a big factor I would say the Oppo. However the Denon units are what I would get if I had the cash for sure. The Oppo only upconverts from the DVI cable from what I have read so you would want to use the DVI-HDMI cable they supply with DVD player or upgrade to a bigger one (I went with Monster before I found this site and the numderous great cable products available cheeper)
That is just my .02
Eather way I am sure you will be happy, goodluck.