I think both are great prospects. Yes, both are growing rapidly, but growth for growth's sake requires caution. Wall Street seems to be overly sensitive to capacity/demand changes, and both airlines have proved that consumers enjoy a la carte pricing structures.
Franke molded Spirit just the way he wanted- it didn't require Circle K-esque changes or draconic America West house cleaning. He sold his stake and took over F9- things seem to be getting more and more similar to the Spirit model. I feel like F9 needed drastic changes, and Franke exercised his might bringing in 3rd party agents. The dust is still airborne, but hopefully things will settle down and F9 will continue to provide it's solid product.
Can't say I'd be surprised about a F9/Spirit relationship down the road- it'd bolster F9 financially while giving Spirit a strong western footprint.
Window Seat seems to have gotten to everyone- guy was probably just having a bad day- likely went home and kicked the dog. Ultimately we're all in this industry together. Sharing our knowledge and support with each other helps us to stay informed and make smarter decisions for us and our families.