Given the choice i would take the 28 GA which i will have to say I'm bias to. If you can shoot you will see very little if any different in killing power between the 20 and the 28. I prefer the 28 GA to the 20 GA and the best upland GA ever made is the 16 GA.

A Doe walks out of the woods today and says, that is the last time I'm going to do that for Two Bucks.