I 'upgraded' from the QS4s to QS8s.

In the real world, I found absolutely no difference in sound or performance between the the 2 models in my medium size room. Surround channels are used mostly for sporadic short bursts of sound but most of time are idle.

I also upgraded from a VP100 to the VP160.

Now this is a worthwhile upgrade due to the extra power handling of the 160 & its ability to reach much lower than the 100. The CC is really the most used channel in modern movie mixes & arguably the most important speaker in a HT setup. Don't scrimp here...

TAM