srevice in mlc is no doubt very lucrative for a youngster.but, this job ends from the stage it starts.this job does not make difference with juniors.promotion gives much incentive during service.look at financial powers in billions, mobility, and influence in irs nd accounts.more, officers in PAAS can go on deputations and move horizontally like foriegn office accounts or audits,military,wapda,railway nd enjoy all these facilities. .all depends on circumstances nd desires u prefer.