I think you are right hairy, I am trying it out now just for shits and giggles, I replaced the double NNEDI2 lines with DrM's line, and LOL it is running 12 times SLOWER! and I have a fast QUAD core PC with 8 GB's RAM running a 64 bit system, I will see the results in a little while, but for now, way to slow for me.
I am pretty sure I am going to stick with what I already have, colors look great, and it just looks a lot better than what I am seeing at the moment with this tweak.