You didn’t actually mention what you were using the sanitizer for which might have some relevance. I anticipate the iso propyl alcohol (IPA) is cheaper.
I like the CDC reference but it does have one minor criticism – not updated since 2009 although I doubt that the science base has changed that much in last 7 years plus other more recent documents are still mostly using equally old references.
The CDC article very well demonstrates that there are always pros and cons – the perfect sanitizer probably does not exist from a micro. POV.
Different test studies may use different reference targets which may well influence the results (see below).
I selected 2 fairly official-looking studies you can look at -
Sanitizers Study 1, 2011.pdf 237.6KB
Sanitizers Study 2, 2007.pdf 120.72KB
Study 1 (bacterial target), 2011, suggests WHO-EtOH (80%) is pretty similar to WHO-IPA (70%) although both were ultimately somewhat inferior to some customized commercial products. Also contains quite a nice review.
Study 2 (virus target), 2007, using a variety of commercial products indicated EtOH (60%) is far superior to IPA (70%).
I daresay you may prefer the first one. i also daresay an auditor may relate to price differences and possibly other factors as in Saraya's post.