The ADP's will give a difference sound than the direct sound from the mini. If you like the sound of the mini, then the studio will not add major improvement for your rears. The sound from the rears, don't stress the speakers as the LCR. I have the mini as my wides and the studio 20 for the mains, and they blended wel with the mains. Most will suggest you getting identical speakers for the LCR and wides, but I don't agree. Anyway the ADP will be beter than both studio 20 and minis.