I were at a shop and saw the R-14PM. We listened to them there and we bought it. But I didn't know they were the R-14PMs, all week I've been reading and watching reviews about the R-15PM and thought that was the model. We're yet to open it cause we're not sure if we're gonna return it and buy the 15s or not. I did really enjoy them at the store, but I wanna know, what's the difference between the speakers? (I can get the R-15PMs for the same price as the R-14PMs)