Need help... I can't decide b/w the Polk RM20 and the Mirage Nanosat. The Mirage gives great sound and feel of music all around but is missing a depth in the vocals. The Polk RM20 give the nice kick and punch which also sounds great. But I can't decide b/w the two. Has anyone compared these side by side or the Mirage with any other Bass Reflex speakers. :confused: