CCSP or CCNP or CCVP or CCSE

After CCNA What is the useful certification among CCNP CCSP CCVP CCSE ?
I'm a technical trainer basically in techsupport Hardware domain But I want to shift in Networking Domain and I've completed CCNA as a first step to it Can any one suggest what next? : : :

All of them are advanced certifications in differrent fields

CCNP = Cisco Certified Network Professional

CCSP = Cisco Certified Secutiry Professional

CCVP = Cisco Certified Voip Professional

CCSE = Check point Certified Security Expert

But as you mentioned you are going to be into networking, i guess the best thing would be to go for CCNP