Advice on 5.1 speakers

[Hulk]

Ok, so I currently have an Onkyo TS-SR603X receiver http://www.crutchfield.com/S-6YPggHcDWhr/p_580TXS603B/Onkyo-TX-SR603X-Black.html

It provides 90 watts x 7 channels. I currently have it hooked up to my gaming desktop in my office with a pair of Onix X-series X-LS speakers and a matching x-sub (150w RMS) with the 8-inch woofer firing down onto a pedestal. I bought the complete 5.1 Onix setup from AV123 (before they went out of business) like 4 years ago. Anyways, I needed some money so I sold the center channel and the pair of rear speakers.

So now, I am asking for some advice for a center channel and a pair of rear speakers. This setup will be in my office, so I don't really need speakers as big as the X-LS I have now.

I was thinking of going with this, is it a good deal?

http://www.monoprice.com/products/p...=10906&cs_id=1090601&p_id=8247&seq=1&format=2

I can use the center channel and the two rear speakers from that setup. How would I go about hooking up the sub from that setup to my current sub (for a 5.2 setup)? Here is a pic of my current sub:
Do you think having two subs (one 150rms the other 60rms watts) would sound good? Where should I place them in the office? If one is placed behind me in the left corner should the other be placed in the right corner behind me?

 

[Hulk]

Ok, so I think a better deal for me would be the following:

Dayton B652 6 1/2 2" Way speakers for the rear $45
Dayton CCS 33B Center Channel Speaker $50

I think this is a lot better and cost effective over the monoprice setup. Any opions on this setup?
Also what gauge wire do you recommend I use on the Dayton speakers?

 

[Deathwish238]

You want to get a center that matches your front left/right speakers otherwise it will sound weird. There will be a noticeable change in tone and well, you don't want that. Better to run a phantom center than a mismatched center.

For rears, the daytons would be fine. Could check out monoprice's bookshelves too. If you want something nicer, look for a dipole or bipole speaker. You'ld get more for your money buying used, so consider that.

It was too bad to see AV123 go out of business.

 

[e2g]

How do you feel about your sub? If you are happy with your sub, then why not look for a 5.0 system rather than a 5.1 system?

Also, from what your links point to, I am guessing you have a budget of only $100 for 5.0/5.1 system?

....and take that 90 watts per channel with a grain of salt or w/e the expression is.