Anyone upgraded from Zu Omen DWs to a different Zu speaker?

Hello all. I've had my Zu Omen DWs' for about three years now and generally I still like them a lot. I have them paired with a Pass Labs INT-25. I'm considering upgrading to the Soul Supreme or possibly the Soul VI but I'm wondering what to expect with such an upgrade. I know Zu offers a generous at-home trial but before I go that far I was wondering if anyone on the forums has upgraded from the DWs to a more expensive Zu and whether they think the upgrade was worth the increased cost.