Are DVD recorders adequate as players?

I have a Sony recorder that also upconverts, but it's main use is for transferring old 8mm/Hi-8/DVI and Tivo(Boxing) content to DVD.

If the point of comparison for the recorder/VCR combo is an inexpensive, mass market DVD player, then the recorder should do fine.

I don't think you need to agonize over this. If you need to have a recorder/VCR combo, and if you plan on buying an Oppo anyways, then I see no point in wasting money on another DVD player. Just sit tight with the recorder as a player and put the money you would have spent on a dedicated DVD player towards the Oppo you want to get.