Ken, It also comes down to what type of TV you got and what other sources you got. For instance, if you have a pioneer and a toshiba xa2 then you are right, its probably not that big of a difference to justify a 875 as opposed to a 805. If on the other hand, you have a regular DVD player that doesn't have good upscaling and a TV that either doesn't deinterlace properly or doesn't pass the 3:2 cadence then an 875 would be more beneficial.
On another note:
I did some testing last night with my motorola 6416 III and a panasonic 50px60u (768p that accepts 1080i input). I was playing around with the HDMI out setting and the 480i override setting. I noticed that the best setting, in my opinion was HDMI out set at 1080i and 480i override set to 480i. What I gather is that for sources that are 480i, the signal is sent as 480i and NOT 1080i, hence the word override
at which point the TV picks it up and deinterlaces and upscales/descales to 1366x768p. When I set the override to 'off' the box converts the 480i source into 1080i because that is what i have the HDMI out setting to, at which point the box deinterlaces and upscales and then passes it to the TV that has to deinterlace again and upscale/descale to 1366x768p, causing a double process or 3rd generation image by the time the TV displays it, this is why the PQ is less.
p.s. I still wonder why some of these components that include the reon and faroudja, why they don't allow you to set the output to 768p and only 720p, 1080i, 1080p. Pretty much all the people that have 1366x768p screens (which are quite a bit) get screwed in the sense that there will always be extra processing being done by the TV. Guess you gotta pony up and get 1080p native screen
edit: summary: I think some of you are giving the STB's more credit than they deserve. In my scenario, my TV is doing a better job at upscaling than the box. If you set the override to off the PQ is really bad. If you set it to 480i, meaning the signal isnt touched, the TV does a better job (granted it is still bad but not as bad as the stb. The difference is noticeably horrible, there is more noise and artifacts when the stb does it.)
Originally Posted by Ken Ross
Thanks for this assessment Joe. I think what you're saying here, at least in terms of my applications, is the Reon is not quite as important as I first thought. I've got TVs that have been tested to do deinterlacing properly and, your tests showed no real advantage in having the Reon do the processing on regular 480i channels. We both agree on the time lag issue, but even from a processing standpoint it seems that many of the newer STBs are doing just as good a job at upconverting. So I really don't need the Reon for deinterlacing and apparently for SD processing.
I may still wind up with the 875 or 905, but maybe not for the same reasons I originally thought. All this is great info to use in making decisions!