Honestly, I prefer NASA MA over NE... they're more laid back, and the events are cheaper (although offset by gas for further events). Once you've done few track days, I'd then start hitting up local clubs and pay the non-member rate, whether that be PCA or BMW CCA. Both clubs offer pretty good rates for hpde's...

I'll be hitting up Summit with NASA MA & CCA, and NJMP with PCA, NASA NE this year...