I'm very attached to my old pair of Rogers LS4a speakers, in my current system. I'm thinking about upgrading to AV by ditching my current Musical Fidelity B1 amp for a Yamaha DSP-AX750SE. My question is whether the Rogers speakers will be up to the job as my main front speakers in the surround setup? I hope so, since I like their sound! What are good rear and centre speakers to get with this setup? Or do the Rogers really need to go? The finances are not unlimited for this upgrade, so keeping the LS4a pair would maybe help with the budget elsewhere. Thanks in advance for any advice.