Do I need a video processor?

Having read the FAQ I know the short answer is that I "may benefit from a video processor."


My question is more specific than that. I recently purchased the Toshiba 52HMX84. The HD picture is amazing. It's scaling of my DVD (Pioneer DV45A) player seemed miserable in both interlaced and progressive mode. I went out and purchased teh Samsung 841 and saw imeadiate improvement with its internal scalling usind the Faroudja chip.


Now the question. My DTV HD-Tivo scales; but seems to do it worse than the TV. The picture is better when watching the standard def channels with the receiver in 480i. Still, I know the inexpensive Samsung DVD player scales better than the TV.


Whould a video processer improve my DTV picture as much as the Samsung improved my DVD picture?


Is it worth the money or should I return the TV for something with better internal processing?


If I went with an external processor, what do folks recommend? It looks like I could go anywhere between the DVDO iScan HD and the Faroudja DVP 1010 (nothing more).