The acoustic energy put into the space is a combination of the electrical signal power delivered and the sensitivity/efficiency of the loudspeakers. Providing up to 65 watts per channel to 93dB @ one watt speakers (VR3 specs) is more acoustic energy than my 770 pushing 200+ watts into my speakers that are about 87dB @ one watt. Are you contemplating a change to less sensitive/efficient speakers?

Second, are you trying to achieve explosion-like realism within only a limited area of the entire space, such as a seating area for movie viewing, plus pleasant music listening levels in adjacent areas or near rock-concert levels throughout the entire space?

Third, will the overall space be very “live” in the sense of very little acoustic absorption, average, or “dead” in the sense that acoustic energy is nearly instantaneously “swallowed up” by lots of cushy furniture and the prolific hanging of drapery?

Fourth, will your budget support more than a receiver at this time? If you are certainly going to stick with the receiver route, the 1070 will do very well compared to the competition. If your situation really requires an additional 4dB to 6dB of acoustic energy from the same speakers, you’ll likely have to step into separates with at least 200 watts per channel and perhaps add a second or change to a larger subwoofer.