I am looking for ward to buy a new home theatre system and I would like to start small. I am planning to buy 2.1 system first and then upgrade gradually to 5.1. Now I chose to purchase 2*RP-280F and sub RP-115SW. But I can't find the right sub or the sub which other guys using with this system is too expensive! My question is can DENON AVR-X3300W can support this system plus my future build? This is an affordable one for me and on discount now. Another option is Marantz SR-5011. There is a second hand Denon AVR-X4200W available which is now discontinued. I would prefer to go to AVR-X3300W but I am not sure I am under powering the system onece upgraded to 5.1. Need advice on this please. Sent from my iPhone using Tapatalk