Oh, for the joys of random reading.  I found that I own two books with the title Borges: A Life, and could not resist the temptation to read them in sequence.  Woodall's book says upfront that it will offer little insight into Borges's literary output, and will focus instead on his sex life and his relationship to his mother.  Edmundson's book is less confident in its Freudianism, and focuses instead on Borges's non-relationship with Norah Lange, who now becomes the key to understanding his entire literary output.  To the extent, then, that it actually offers attempts at literary analysis, Edmundson's book is to be prefered over Woodall's.  But truth be told, they are both woefully banal and trite.  Good reminders why one should never read literary biographies.