Advice on 5.1 Surround set 500 - 700€ (sound only) Hi,

I'm pretty new to audio so i'm looking for some advice here.
My current setup:

Beamer: **Optoma hd141x**
Receiver: **Onkyo tx-nr636**
Sound: logitech Z506 (impulse buy)

I'm currently preparing my home theater in my newly built home and i'm looking to get a decent 5.1 speaker set (wires for 7.1 are there but not the money ;) )


**Anybody who can recommend me decent Front/back/center speakers and a subwoofer ?**
