This subject has been debated here dozens of times. Neither side will ever accept the others explanation. Years ago I posted information I found about what the total resistance (coil primary + ballast resistor) should be to match the transistor. But I don't remember what it was or who the source was
. It might be in one of the race manuals from D.C. or M.P.
Personally I have been running a Supercoil for about 18 years with a .8 resistor and a chrome box. No issues.
I don't really have anything else to add except -
"In theory, there is no difference between theory and practice. In practice, there is."
Do what works for you.