Is Mc a step up on the prima luna's?

My system presently; b&w 804S, Prima Luna Six Amp P.L. three pre amp,cambridge azur840c cd, panamax line conditioner. Years ago I had sh entry system Mcintosh. In the last few months I have had a yearning to go back to my first love -- the Mcintosh. I know we are comparing apples and oranges to try to draw a comparison between the Mc and the P L. but was thinking of moving from the P.Ls back to SS. Have my eye on a MA 6500. I like my p.l.'s but thought the Mc might drive my b&Ws with a little more authority and perhaps produce a fuller sound ewspecially in the base. Would appreciate some help and suggestions. JNorthj