Hi Norma,
I'm running My surround(7.1) with 600w/ch(Bryston 14BSST) for front speakers, and 160w/ch(Bryston(BSST) l/r side, l/r rear,center. My speakers are B & W in wall equivalents of the 803s and HTM1 center with four CDm SNTs for surround. I agree that you are more likely to damage your speakers through clipping with too little rather than over driving them with too much power.
I'm running My surround(7.1) with 600w/ch(Bryston 14BSST) for front speakers, and 160w/ch(Bryston(BSST) l/r side, l/r rear,center. My speakers are B & W in wall equivalents of the 803s and HTM1 center with four CDm SNTs for surround. I agree that you are more likely to damage your speakers through clipping with too little rather than over driving them with too much power.