I have had my tsr-700 for a few weeks now and I am on the fence about taking it back to costco. My previous receiver is an RX-775 Im going to swap out my dayton 5.1 set for kef q950's and and q650 center, which receiver do you guys think would be a better fit? I like that my 775 has preouts for all speakers vs the 700 having only the fronts. I would like to get into dolby atmos content at some point.Do you guys think the 700 is capable enough to run the kef speakers or should I go back to the 775 and wait to upgrade.