I use the 5900 with an ED plasma. I wouldn't recommend scaling the output though. The reason being is now you are scaling up, just so the plasma can scale back down. And it probably won't do as good of a job. It is essentially a useless step. Native HD feed are different since they are inherently a higher resolution to begin with.
I would still recommend a DVI based player like the Denon or Pioneer though, just because of the benefits of a pure digital signal.
I would still recommend a DVI based player like the Denon or Pioneer though, just because of the benefits of a pure digital signal.