Well I'm about ready to take the plunge and buy a pair of m80's and a 150 center but I'm worried that there won't be that much of an improvement over my current speakers that my wife will kill me.ha ha.well anyways my current system consist of an Onkyo tx-ds787 receiver,a pair of Cerwin Vegas RE30 speakers with twelve inch woofers ,five an a quater mids and one inch tweets.A Jbl center and a Rava sub.will the purchase of these speakers be a substantial improvement or not?I know this sounds like a silly post but this is alot of money to me.