JohnW, I have an LCD projector as well and have made the jump from a progressive scan to upconverting dvd player . I will say I did not go with the Oppo . I have looked at it and it seems to be an excellent player though .

My experience in short .
I bought a sony LCD front projector . Hooked up my existing Sony progressive scan dvd player . Used Monster M-1000 component cables . Pressed play and was disappointed in the picture quality . I managed to get an o.k. picture with the component but it sure was not what I had expected . I am lucky in that I can try out components from the store I work at and did so in this case .

I brought home a Samsung HD-931 with DVI output and upconversion to 720p . Through the upscaling of the Samsung I saw a huge and I mean huge difference in quality . This actually surprised me as I had seen the Samsung on several large screen systems from DLP, LCD too rear projection and saw improvement in the sharpness and clarity but nothing like I was seeing here through my front projector on my screen . It was such a large scale improvement that I bought the Samsung HD-931 . I have since upgraded to a Sony Which upconverts through HDMI to 768p . It too has a huge advantage over component or at least in my setup it does .

Whoever told you that it would only show improvement on a DLP or LCOS was a LIAR a FOOL or BOTH .

My old Samsung HD-931 now sits proudly under my mom and dad's Sony 60 inch LCD . They are in there late sixties and both were surprised at how much better the HD-931 was over their Panasonic progressive scan dvd player .

JohnW, if I could have you over and show you I would . At least I can prove I have experience in what I say . Click on my link and you will see my upconverting Sony dvd player . I even have close ups of the HDMI going into the back on page two .

So with that said I think that yes you will have a big improvement in picture quality . And just for peace of mind buy from someone with a return policy . That way you can always send it back .