Dyingforflying, many Asian and Indian airlines will only use employment agencies for pilot recruitment. The two you mention have been around for a long time. You will find that posters here will write at complete variance from one another; some will say, 'they are very good' and other will say 'don't go near them.'
I would register with all of them (see back of Flight International) and see what they offer you. T&Cs will be very similar if they are recruiting for the same airline.
A320 with 350 hours might be on the low side. Maybe wait until you have 1000 before you jump ship.