Improve? don't know as I don't have the Panas. But, I have a M9 tip set and tried it with a few other IEMs. Tips will definitely change the sound. Just pull the trigger on a M9 / M11 / M11+ tips. MEE offers keep flowing through out the year, so do not worry about that. You can always pick something different next time .
10/10/10 at 8:49pm