Cs v/s cwa v/s specialization - what to choose???

HELLO FRNDS & MEMBERS,

                            After becoming CA everybody have twp paths , one is business(which includes practice& own business both)  & second is service..

i just wanna talk about those who are not gone in to practice or own business, i.e. who gone in to service sector (or say doing job) .. i m also in service sector & now in very huge confusion  on what to choose for further study CS, CWA or any specilization course...

suggest considering good future demand & prospects  ???????????