Merkles: I am currently running a 1050 with a Parasound 2ch. power amp rated at 205wpc. I see no reason why you couldn't do something similar with the 1070 if only your mains present a difficult load. Depending upon your needs you could also look for what I assume will be a greater volume of 755's on the used market.
Frankly, while I would like to upgrade to the 990 and a 770 or its replacement, my fall back is to just replace the 1050 with the 1070 and keep the Parasound for the fronts. Currently, my biggest problem is being able to justify to the better half why the 1070 is $500 to $600 better than the 1050 for a 6.1 system. Anyone have any suggestions (Dolby Headphone alone probably won't do it)?
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Living Room 24x18 open 1/2 flight up to a raised dining room/hall 24x12
Outlaw 976 pre-pro running 5.1 system
Outlaw 750 for Artison Masterpiece LCR and 2 NHT SuperZeros rears
Velodyne Servo FX-1200
LG OLED65C8PUA via HDMI2 to/from 976 HDMI ARC
Roku Ultra
Samsung BD-D5500 BluRay
Amazon FireStick 4K to 976 Aux HDMI input for Amazon Music Ultra