I have a lansky system also. superb product would highly recommend it for anyone who wants to really take care of their blades. 
this is what i use
http://www.amazon.com/EZE-LAP-PAK5-C...+diamond+stone
Like i said i can hold the angle now.  takes me 30 min or so to re angle a small pocket knife.  an hour or so to do a med, two or more to do a large hard steel pocket knife.  Kukri sized half day.  A zen moment thing for me.