Yeah I am thats why I asked because I was thinking about buying some but I didnt know how they would sound on my drum!!
a cheaper way to solve the problem of detuning on the Musashi or any snare is swithch the metal washers for plastic.
the second cheapest is plastic tuning locks.
the third is a lil more expensive and that's the tunerz rods from DW.
I have the 12" Musashi 4yrs now and the plastic washers worked for me.
Die cast hoops will help because they are more rigid. They take the pitch up a bit but your tuning will be more consistent however your tuning range will get slightly smaller because of the rigidness of the hoops.
I suggest getting the S-Hoop to keep the tuning range and add rigidity at the same time instead of die-cast.