While I agree with racrawford65 that speakers will give the biggest performance increase per dollar, that would apply to going from the Sierra-2 to the -2EX V2 as well. There will be a significant boost in performance just doing that, which would then also allow you to upgrade your electronics. But..... you cannot dismiss the performance advantage of that dedicated midrange driver and large RAAL. So this probably does nothing to help clear the muddy water!