Ok,
TNT is your best bet. They are the safest, fast, and probably the most reliable.
Aramex is economical. But service is poor. But still works for most.
Professional is a good option. But i wont hand over high value to them. (I havent tried them myself)
Bluedart is good. But most expensive. No matter how much you negotiate, they are quite rude actually... The sales person visits us for the first time after followup for 20 days and gives a rate list double the rate of what TNT is offering...
Other small couriers can be used for not too expensive products.
Regards
TechiE