my room is (going to be) 10feet by 15 feet. rock, hip hop, electronic and score type music. im looking for a solid and great set of monitors. heard nothing but great things about dynaudio. had a chance to quickly hear the 5a's at a guitar center (2min). sounded good to me. right now im using a powered event pair (ps6's) and theyve been great just want a better quality (better low end) set. are the 15a's too much for my room? whats the major diff btw the 5's and 6's?