Is it worth changing my DZ850KW surround? (1 Viewer)

[bilanio]

Hi Guys,
I have a simple question and i any comment is appreciated

I had for the past 4 years the DAV DZ850KW from Sony
http://static.productreview.com.au/pr.products/89369_sony_davdz850kw.jpg

And so far im pleased with it, someone asked me if i want to sell it and i was wondering if its worth to sell it and buy a new home theater (no need for blueray of DVD player as i use my PS3 and hopefully soon PS4)

I saw the bose and read more about them (surely they are above my budget and people online said they are over rated)

so the other option was klipsh like the ones below:
http://static.trustedreviews.com/94/83d5bc/0f83/12344-hdt500hometheatersystem.jpg

And that require a separate ampli.

SO my question is, is it worth it? the sound in klipch will be much better? or i wont notice any difference with the new installation?
What kind of ampli i should get with these speakers? what specs i should ask for to know that ampli and speakers works together without issues.

Knowing that i already own the sony so i won't have to pay extra 700$ to get the new home system!

The room size is 5 meters x 3.5 meters, and i have a descent 46" Led from Sony.

 

[schan1269]

Anything is better than HTiB.

 

[bilanio]

Hey, so i was checking the possible options and i found the following:
HD-500 from klipsh (500$)

and one of the following receivers:
1- Harman Kardon AVR-158/230 (500$)
2- Yamaha RX-V365 (250$)

I really hope to get help from you guys with my choice because there is a lot of details that are new to me here

For example, which receiver works better with the HD-500
The installation is much better than whatever i have now? Sony DZ850KW?
Yamaha is 250$ only is it a big advantage in buying the Harman kardon one? or Yamaha gives similar output??

Thanks

 

[bilanio]

BTW my choices are very limited, stores in my area don't have a lot of speakers for small budget..

 

[schan1269]

Every AVR pairs with that speaker set.