The best thing for F9 would be to get away from Franke... it quite literally made this airline do a 180... obviously I’m a bit biased but don’t look at a two year upgrade and sprint towards it... think looooong term...spirit is safe and stable (for now) our product is light years better and getting better by the month...they really are FINALLY investing in the company...there are naysayers on here that say you’ll “never” upgrade without another order... that is true but it’s a foregone conclusion more jets are coming... we just don’t know what kind and when. Again my opinion is biased but if your looking to spend the rest of your days at one or the other... spirit is leaps and bounds the superior choice. Both pilot groups are filled with great guys and gals... good luck... your very lucky to be in such a position to have to choose between the two