Hmm that is going to be a tough one. In either case it is a win, win in my opinion. I have not heard the C3 but have heard the C2 and 1 series. I have heard the Forte 3 and thought "how in the heck can all that come from such a small box"? Answer ROY DELGADO that is how. The F3 is one of his babies and I love all of Roy's work especially the pro line of speakers. I think the man hit it out the park with the Forte 3, are the perfect no but what speaker is (except the jubs)? Will it beat some of the pro stuff mentioned above...not to my ears but you didn't ask that so I say F3.