Compressed ElkMaster (Efren)or Compressed Blue Diamond.
JoeyA (every now and then, a Moori medium, once in a while an oldie but goodie-LePro (Buddy Hall).
I used Le Pro at first, still don't hate it, spin just seems easier with the Instroke.
I begun experimenting with tips once upon a time, found some that were OK, some that I hated. Decided to quit wasting time/money and use the Instroke that I enjoyed.