Depends on your comfort level and mission, but the overall value as far as $$'s goes is to roll your own. I know many people (including myself on my 1st RV) who bought the Van's kits. Then, I figured out what I was paying for the stuff and realized doing it myself was a lot cheaper. Now a few years later look what's happened to me......
That being said, some people have pretty good luck with their pre-made harness if they stick fairly close to how Van wires the airplane.
Overall, the best value is #3, the worst value is #1, and #2 is right in the middle. No matter what you do, you'll still end up spending money on "piece parts" from other places.
Cheers,
Stein.