Power Cords and Power Conditioner, How to arrange?

For cables, many Audiogoners say power cords will make the most impact in their hifi system. I wonder which power cord is more important, before and after a Shunyata Hydra power conditioner?

Shall I buy a better power cord to connect the mains to power conditioner, and lesser cords after the conditioner?

Or shall I just connect the conditioner to the mains with the same quality wire in the mains, and invest all my money to the power cords after the conditioner?

Any experience and ideas?

Many thanks