Both spinnerbaits and in line spinners are great for pike and may be the best overall lure for them. When working shallow weedy areas, I pick spinnerbaits. When fish are a little more finicky, I choose the inlines. The #15 panther martins in gold or silver, and #5 Aglias or Black furies work well for pike. Small musky bucktails are good too.
I have generally had better luck on spinnerbaits for pike, but if you aren't fishing weed areas, you cannot go wrong with a big inline spinner.
When the water is off color, I pick the spinnerbait because it pumps out more vibration and flash. And in the evenings for pike, crawling a buzzbait along the surface is lethal.