I know Dan did an A/B comparison with QS4's and QS8's and it was mentioned that the 8 just sounded better. I had originally ordered 4's and went up to the the 8's (but this was back when the 4's had a different tweeter) and the change was very noticeable. I would imagine you would notice the 4 to 8 change the most while listening to music in multichannel as the 5 1/4" drivers all have the same tone for a perfect match.

Or order up those M80s and get your secret decoder ring wink


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