DVD by Oppo 205

Thanks guys. If it upsamples to closer to 1080p that’s a great improvement. I hadn’t thought of the Darby processing. Since there are so many opera DVDs it may be better to go with the 105d. Any other cpmments ?

Do you have a 4k TV?  If not - no reason to upgrade to  4k player.

I have observed that upscaling to 4k can create some strange looking images. The upscaling and also enhancement to HDR makes the images look un-natural - like they were shot in a studio with very bright lights (perhaps they were....).
Real 4k Blurays look astounding so that's why you should buy the latest technology - stop living in the past.
Sound quality on the UDP-205 is better than the 105 - particularly on voices, which would be a consideration for Opera.

Glad you mentioned vocals !  I am an opera nut. Love audio and video. I have a glass of French Brandy and - honestly - I am there. I am “supremely” grateful for DVD’s and enhancements are Gravy !!!

The UDP-205 can upscale, but may not, depending on how you set the output resolution (setting). 

You would have to decide what’s more important.  Your original question was for DVD 480i video quality.  The older 105D is better because it has Darbee processing for low res.  The newer 205 has better audio quality if you use the analog outputs, but will not be as sharp on the low res DVD video (since it lacks Darbee).