I have 3 sets of Bose 151 se outdoor speakers and I am evaluating receivers for the job. At times we will run one set but for parties all 3 sets will be on for extended periods. Onkyo tx-8511 and the Harmon Kardon HK 3480 seem to be good choices. Will either unit drive all three sets adequately. Does one unit work better with bose than the other? We listen to many kinds of music including our teenager's noise -oops I mean music. Any opinions would be appreciated. Thanks