I've heard the Paradigm 390s, all I can say is they are good but I liked the sound from the QS8s better, especially for music. The 390s just seemed off, not sure what I didn't like, it was awhile ago, all I remember is thinking they just didn't sound right to me while listening to some concert DVD's.

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70