I've placed one or two orders with Pan American and been happy with the results.
As for air-drills, I've found that the
ATS Pro Palm drills (for $100 - $130) are the best bang-for-the-buck in terms of drilling speed, low-noise, and quality of construction.
I started out with cheap JET/Harbor Freight air drills, and the improvement in the experience of moving to these better drills is impressive! I still use HF for cheap/disposable clamps, my 1"
scotchbrite-belt tool, and pneumatic rivet-puller though. The Sonex really doesn't require you to spend a ton on tools, thankfully!
--Noel
Sonex #1339
Center-stick, TD, Acro-ailerons, flush pulled rivets, Turbo Aerovee