Figured I would start a discussion of pros and cons of both organization..
NASA pros
Short weekend
condensed format with little dead time
fair amount of track time
Seems more laid back atmosphere
Use of dyno post race to compare cars
NASA Cons
Qualifying races are short and can lead to over aggression and contact
split championship, no longer a single national champion
in general lack of the same level of competition as runoffs
not much invasive tech ( none this year)
In last few years since the split, smaller car counts
SCCA pros
Considered by many the hardest to win and the biggest prize in amateur Motorsports
Competition level
Car count
Invasive post race tear downs
SCCA Cons
way too long of an event
lack of track time for time and financial committee made
the event is usually a pressure cooker and not very laid back all