To Spring or not to Spring

I am trying to get a sense from people as to which framework people are selecting, Spring or EE5. Several different projects I am privy to at different companies have employed Spring with good success. Another colleague just published a book on JBoss SEAM with its EE5 underpinnings and is very high on its capabilities. Long story short it seems like this is going to be a Ford versus Chevy debate. Maybe I am wrong but would love to hear any feedback. 

Due to the use of Spring configuration and Spring Bean support in Cape Clear 7.5, I see my path has been pre-determined.