I want to upgrade my pioneer VSX-1021...there is simply not enough wattage and it sounds too bright. I am looking at the Denon 4311 ci, Yamaha RXA-3030, or the Onkyo TX-NR-3010. Which of these would sound the best? I have Polk RTi-8's, with blackstone surrounds (which I hate) and would like to upgrade to FXi-6 dipole surrounds. Any help is appreciated...thanks!