The reunion blues and PRS premium cases are pretty nice! As are the mono.I just had a correspondence with Reunion Blues. They recommended this case to fit either the S2 Studio or the Santana:
https://reunionblues.com/collection...ntinental-electric-guitar-case-voyager-series
The PRS premium looks good T $89 on sale also. I don’t think I’d fly with it, but really it would just be for taking the Santana to lessons and stuff.
I might go with the Gator Icon. I like that it doesn't have leather or fabric appliqué protectors where the strings and headstock are. Those things are never in the right place, and some of them rub against the paint on the PRS'. The Icon has microfiber fabric of some kind for its entire length, which means it shouldn't damage the guitar's finish.
The case also looks very well made. Evidently they make their stuff in Indiana, instead of somewhere offshore.