There is no best version.

I'm of the opinion that a song is only as good as the memory it envokes. Having heard several versions of 'Hallelujah', I remember them for different reasons, and that clouds the issue over whether they were good or not. The version I heard shortly after I was told my cousin had been killed in a terrible car accident is forever tainted with that memory, so I don't like it. The version that they play on 'Scrubs' is associated with a programme I like, so it's a good version, as with the one they play on 'Shrek', if indeed, it's not the same version...

Personally, I don't think anything can beat the 'Hallelujah' that Georg Frederic Handel wrote... but that's just me.

LTS