The BD-80 wasn't available when I bought my BD-83, so I have a BD-83, but I do not use the Oppo for Video processing, I let the Sim2 C3X 1080 do all of the processing because I believe it has the best video processing in the chain.
In my case, I needed a player that would output the purest digital video signal, what they call "Source Direct" so I can let the Sim2 do that job with a clean signal. I had a Pioneer Elite that had source direct, but it was slow and problematic so I got rid of it. When I was shopping, there were few other players that let you choose source direct or provided for such a clean digital signal out and none of them had Oppo's fast load times and hassle free operation.
This Source Direct capability, which all of the Oppo players have, also enables the Oppo to be used in the most high end systems because it pairs so well with a high end outboard video processor or with a flat screen or projector that offers top notch processing.
There may be a blu-ray player or two out there that can equal or beat the Oppo BD-83 SE's analogue out -- I don't know, I haven't kept up, but I doubt you'll get such fast load and response times or problem free playback and you'll pay exponentially more for them.
A lot of audio junkies will want to do their Digital to Analogue conversion downstream anyway, so all you would get with the more expensive players that compete with Oppo would be poorer load and response, more problematic firmware updates, and the opportunity to pay for audio capability that you won't be using anyway.
Steve, in your case, I could see you going with the SE only because it would allow you to enjoy the latest HD Audio codecs by using analog out from the Oppo and passing it through the lexicon without further processing. It'd be interesting to A/B that against using digital out to the Lexicon and in many cases using the lesser codecs.