hi everybody i'm new here and need help. i have the quintetIII speakers with a sw450 sub and a yamaha rxv665 receiver. i'm happy with the sound for movies but not so much for music. i want some speakers that i can crank up when i play led zep, the stones, hendrix etc. and have a clear crisp sound. being in my price range what is the difference between the rf-82 and the f-3? also what center speaker would go with them? do i need to use a sub with those speakers, if so will mine be alright? thanks for your advice- bill