Ya, I don't think you can go wrong getting a Hilliard, Stinger, or Noram.
Briggs will not make them illegal since that's what the majority have been running for years now.
There are a few new brands/models available that are used in limited quantities that I think Dave is trying to nip in the bud. Hence the "approved" list.
Consider, Dave needs to look at the price point, maintenance cost of each clutch, performance advantage if any via testing, availability to the masses, etc and yet wants to be sure not to exclude anyone that should be on that list. That's part of the delay I would guess.
I'm sure clutch guys are lobbying hard to make it on that list as well.
