The Professional Series four π is a very good speaker. The shorting ring in the JBL woofer reduces distortion by a significant amount and it really sounds good. You could go with a hybrid, having a four π bass bin and the midhorn and tweeter from the seven π.Other options include the Stage four π or the 4/7π hybrid, the Theater Series three or four π or the Thermionic Series three or eight π speakers. You could even upgrade the tweeter in your existing two π speakers, for a start.