Advice on Cisco Security Role Certifications

Hi everyone

That time of the year has come around and I have to get one of these three certifications. Implementing Cisco Secure Access Solutions exam (300-208 SISAS), Implementing and Configuring Cisco Identity Services Engine exam (300-715 SISE), Securing Networks with Cisco Firepower exam (300-710 SNCF). I'm currently leaning towards SNCF because I have some firepower experience but I would like to hear what some you think about them.

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PS: I also am trying to take in account which certification is most practical and useable.

Thanks in advance.