I have the Sony DVP-NS900v, and must say, that as far as video quality it is more than acceptable. SACD playback is multi channel and when released was considered most excellent. Having said that, I am sure that SACD DACs have improved, if I where looking to buy again I would seriously consider the Sony DVP-NS999ES, ES quality and reviewed favorably.
The 900s weakest link, and probably the 999ESs, is its CD playback, I am not sure if that matters.
As far as Toshiba and Pioneer multi format players, I would suggest a comparison, the video characteristics differ. I prefer the Sony, both the Pioneers and Toshibas seem artificially vibrant. IMO anyway.
Good luck, I have enjoyed the SACD format greatly I hope you do as well.