I'm new to the audio world and I need your help. I've been trying to decide between two receivers; a Marantz SR4320 and Onkyo TX8511. I've read some pretty good reviews about the Onkyo's two channel receiver but have seen very little reviews on the Marantz. I know that Marantz has a good reputation but wondering which would be a better choice to match with a NAD C521BBE CD player and a pair of Polk RTI4 speakers. I've been trying to put together a "budget" home audio system. Both receivers appear to be a solid buy for under $400. I would appreciate any feedback. Thanks!