I am considering the following setup for my HT in regards to video... a Digital Projection Ivision HDX DLP projector, with an Iscan HD scaler, a Pioneer DV868AVi-S universal multi-region player (UK DV-59AVi model) and would like to know if SDI output is reccommended for better picture quality with the above hardware? I sort of understand the basics of it's function, to send a signal straight to the scaler with no D/A or A/D conversion which I guess would mean less artifacting, noise reduction and less edge enhancement, but could someone please verify that I have got the right idea. I'd like to know if this would be of benefit, to whatever degree, in regards to video quality of my HT and whether purchasing a modified high-end player such as a Pioneer Elite, is really a smart thing to do? I'm not a huge tech head and only have a very basic understanding of the rundown of all of this, so if someone could please explain in simple form, it would be really appreciated. I'd just like to know exactly of what benefit SDI output would be with regards to my DVD player and if there are any downsides to modifying such an expensive unit?