considering Yamaha RX-V4A or perhaps at a stretch a RX-V6A. The former has 4 HDMI inputs which I need. Speakers are rated as front towers 150W 6 ohms, centre and surround speakers 100W 6 ohms. My previous receiver (Pioneer VSX-1019AH-K) which has now died and is unrepairable was rated at 140W 6 ohms. Thoughts on which one or others would be appreciated.