My only recommendation would be, don't sell the Vandersteen 2ce for at least a year if you decide to buy the Sophia. If you can't afford both then you need to wait. It's too easy to get seduced by something different in your new system and then a few months later really miss something else from your old system. Also the way speakers interact with a room makes home audition critical. The 2ce are excellent speakers giving wonderful transparency and imaging. If the sub is working well in your room and integrated well, the Sophia might not improve in the bass department. Personally I would look into trying different amps (maybe a VTL, pass or BAT) with your vandersteens. Really depends on what type of improvement you are hoping for (imaging? dynamics? transparency? loudness? bass?) and what kind of music you mainly enjoy.