That's an interesting question. Obviously with more power they get MUCH louder, but I gotta say overall I like them better than the xcon. They have a wicked punch to them on metal and even with my conservative SSF settings, they will slam on the lows. I have played around with them with a much lower SSF setting and they get NASTY. I was told today that I am too conservative, but I prefer to be safe than sorry. Hopefully redneck can chime in as we had this conversation today about how solid pole subs seem to have more authority on bass punch. The zcons are tight as hell! They sound really damn good and only got warm after banging the shit out of them for about an hour today. Well built moofers as were the xcons. Don't tell redneck that, he is already looking for victims to film. LOL.