Surround speakers

[pepp77]

My home cinema setup is decent but basic. I have a Sony STR-DN1050 Amp with a Wharfedale Diamond SW150 Active sub, however the front, centre and surround speakers are still the Onkyo speakers I originally got with my Onkyo amp. The speakers I have I believe are HTP-348 set (http://www.intl.onkyo.com/downloads/manuals/pdf/htp-348_manual_e.pdf)

I am thinking of replacing them with

Q Acoustics 2010i as rears
Q Acoustics 2020i as fronts
Q Acoustics 2000Ci as centre

My questions are is it a worthwhile upgrade at almost £300 or can I get better for similar money in similar sized packages? Laos if I was to replace them one set at a time which order should I replace them in, I am assuming rears last?

Cheers

 

[bulletv1]

*not an expert* Just from comparing the two speakers i would have though the Q Acoustic ones would be better. I have the 2020i fronts and and 2000Ci centre and they are much better then my old kenwoods.
If you have a richer sounds nearby why don't you try and have a go in their demo room with the speakers you want. They'll probably have an amp with a similar sound as well.