Well if you look around the industry Spirit Airlines is thumbs up for the following reasons.
1. large growth potential double to triple in size in 2-4 years.
2. ALPA carrier with ALPA national making it the poster child of taking it back.
3. Spirit is currently hiring approx 16 a month through the year.
4. Newest fleet in the US
5. The new contract will bring Spirit pay way up from where it is now.
6. IPO on the horizon in next 1-2 years
I think Spirit is thumbs up..!