Dare I ask why or what will be the primary use? I mean for the high cost that you are going to pay, there will be much better for TV/video maybe even cheaper with better quality too; not to mention 16:9 is where its all headed over 20" and they will reproduce 4:3 fine.
It has to be 4x3 because of the viewing distance and I only have a narrow space (width-wise) to place it and it has to be lcd for the depth, can't have a crt there.