I need your kind support for making a decision. I compare between the following available models in my region&"according to budget as well" 1. Matantz NR1609 2. Marantz SR5012 3. DENON AVRX 2500H 4. YAMAHA Rx-V685 What i need is 7 channels , for living room 5*6 m " , want receiver that works perfect for music & home theater experience . receiver that give me the chance to get or upgrade speakers in the future without feeling sorry about Av-receiver max power.