Axiom Home Page Forums General Discussion Home Theater need advise replace Onkyo HTIB S780 speakers

Good Day to all,ive read a lot of threads in this forum and I would like to ask for advise or opinion regarding my Onkyo HITB S780 I bought at Circuit city $450 to replace with axiom speakers
Replace front=2 M60
Replace center= vp 150
Replace surround= 3 QS8
Keep the Onkyo receiver 1000wtts and subwoofer 230 wtts
room size Large
I bought Onkyo HTIB S780 becoz of positive reviews now i want to replace it with Axiom speakers.
Do you think it would make a big difference in sound quality.I love music and movies.Thanks to all and more power