Which pair for my rears? 5.1 setup

[JMFB77]

Hello Guys,

Here goes i am still new at this. I was wondering witch pair of speakers i should go with the Polk Audio Monitor 30 or the Monitor 40s? I am running a non HDMI reciever atm a VSX 816 Pioneer. My plan is to replace my cheap Pioneers Speakers that came in a box set. My next question should I buy the rears first or maybe a center or even fronts. I already have stands for my rears so they need to be bookshelfs and I already have a klipsch sub.

Once i have my speakers then i plan on buying 606 for my PS3 I have 200 to spend atm.


Thanks again