Two versions of the HLS UMaRG pdf available. Which would you prefer in the future?

I've been able to create the HLS UMaRG on the Wiki into both a single column as well as a double column pdf.
They are now both available on Joe's download page:
http://joehinkle.com/HLS/UMaRG-2013-02-10.pdf

http://joehinkle.com/HLS/UMaRG-SC_2013-02-10.pdf
(Single Column version [SC])

I would appreciate your input to which version you prefer so I'll know which to continue with in the future.
I'll leave the poll open for two weeks. During that time I'll create both versions.