BM 806. After reading the perfigo article, I actually went around nailing the punching bag at school w/ it, plus myself (lightly).
Conclusion: Nice butt.
Interestingly, Bob Kasper cited Loriega's "Sevillian Steel" book as the inspiration for the perfigo. However, in the book, Loriega cites the CS Vaquero Grande and the BM 806D2 as very good knives for Navaja use and practice. Something to think about.