Q900 + Q600C or RX8 + RXLCR, RXW12 or R400B with Yamaha RX-A2030 ?

[tiesto14]

Hi !

I'm currently preparing an order of a system for my big living room that for now is :

Yamaha RX-A2030
Monitor audio RX8 pair
Monitor audio RXFX pair
Monitor audio RXLCR
Monitor audio RXW12 sub

As they are in the same price range, does the Q900/Q600C combo could be better than the RX8/RXLCR combo ?
The same goes for the R400B sub in replacement of the RXW12 sub..

As for the RXFX biople speakers, i guess in the same price range it's the best i could get ?

Thanks !