Any CP over 20" is a dandy in my book. 24"+ is a trophy and when you get into the 28"+ range, you're talking a once in a lifetime fish. CP will no doubt prey on sunfish, but if given the choice, they will certainly pick spineless fusiform fish over sunfish. Keep in mind, if you are stocking these fish into a pond with LMB, you'd be blown away at how large of a CP a LMB can prey on...