For the past 3 years it's been a First-Light USA Tomahawk ST
http://www.youtube.com/watch?v=M8cGK_JoPVM
http://www.youtube.com/watch?v=JMNXPQlUEwQ
By far the most facile and natural when doing hands together techniques and very handy.
Ran it through SouthNarc's Armed Movement In Structures course (excelent course which contains a night component) last December and it worked outstandingly well for all the stuff he teaches.