I've been listening to two speakers. M&K S-150's and PMC TB2. 60% movies and 40% music. My receiver is a Yamaha rx-v2400. Will the Yamaha have any problem with the M&K? Has anyone else listened to the PMC's? Also, When the salesperson said he would knock down some of the price off the M&K's, how much would that be?----Thanks wpfly