I thought this post would be the much more interesting topic of how to rationally determine how much to give to SENS and SIAI respectively given that you want a positive singularity and want to live to see it.
I know one dude who left his career (programmer?) in order to study biology; he now works on anti-aging stuff in the relevant Oxford department. His motivation is only party to speed the research; it's also to ensure he has access to it if it's prohibitively expensive.
If you think that SIAI is the best charity, and you work for SIAI, should you give any money to charity?