From the quick research that I've read up on ICE is superior to the MSD and its made in Australia.
http://www.iceignition.com/ignition-coils/4200-pro-series-race-coil"
From:
http://www.gmh-torana.com.au/forums/topic/64222-msd-vs-ice-ignition/
"This something I know a bit about.
CDIs including MSDs push the energy through the coil in a very short time period and as a result the losses in the coil are VERY high. I was measuring a MSD6 with a MSD 8253 coil and even though 100 millijoules of enery comes out of the box only 38 millijoules on average leaves the coil and actually arcs across the plug gap. and that was with a very low resistance plug lead about 200mm long. If you have typical length V8 leads of 5000 ohms resistance you can halve that millijoule figure again.
With a 10 amp ICE setup using a 4200 Pro series coil I measured 165 millijoules out of the coil. The losses in the plug leads are way less too because inductive ignitions put out less current but over a much longer period of time. The MSD put out 350 milliamps for 0.12 miliseconds, the ICE put out 150 milliamps for 1.5 milliseconds, both arcing into 1800 volts, typical of a running engine."
