Changing spark plugs in a small block 360 Any recommendations on which brands are the best to use?

Mild cam, headers, 600cfm edelbrock carb, Mopar chrome ECU box Have Champions installed now and wondered if there's an easy upgrade.
How much do you know about spark plugs? As in.. what do you know about plugs that leads you to believe there's an "upgrade" and what does "upgrade" mean to you exactly? What don't you like about the champions? Are you trying to find power in changing spark plugs..?..
if so , stop wasting your time.
Go play with the distributor timing and advance... that can find you more power.