3 speaker system

My car has the factory delco bose 3 speaker system.2-6.5 speakers in the doors, and one 6.5 w/ factory amp in the hatch.Wondering what are good speakers to replace the stock ones with.I just put in a sony head unit.

when you placed the sony hu, did you just by the adapter or did you run new wires to each speaker? if you bought the adapter and left them as is, i heard that then you might have to get some really expensive speakers with built in amps or get regular ones like the sony explodes and run new wires.