Kelvin, that seems to be really my only option now
I will check them out each with a dvd. I know the Onkyo has the
Faroudja DCDi (Directional correlational deinterlacing)
Which is pretty respectable at what it does, however I have no idea (neither does google) what my Sony LCD has; unless its solely Bravia Engine II.... As far as upscaling goes, it's tough to eye that one out, however I have yet to really compare the deinterlacing part of it.
I would like to assume the Onkyo probably has the better deinterlacer...