I went with the California Air Tools 15gal from the first post on the recommendation of another builder.
The "Quiet" part of the equation was the driving factor as I'm building in house for the time being.
Not in a garage, but in a spare bedroom, in a house, that I rent with two other people that have zero interest in aircraft construction.
After running a leak-down test on a manifold block I had built up I received a report back of "That was it? I could easily have kept watching a movie without turning the sound up."
That's a win in my book!
Practice Kit completed 2/19/2017
Tooling up for -7 empennage build.(100% tooled 1/31/2018)!
Orphaned -7 empennage kit purchased! 9/15/2017
-7/8 Rudder 25% complete.
2018 Donation paid...