My dad bought this
KEF speakerset. I must say they are top notch! They're quite pricy though (don't know what your budget is). But the sound quality is absolutely amazing and you can just upgrade your speakerset to 6.1 or 7.1 by adding one speaker. A big plus is they look good too!
Seb.
As far as the Marantz, awesome, you can never go wrong with Marantz.