the B58 and PR coils are definitely an upgrade over the R8 coil.
Thanks for testing these out! But how do you come to this conclusion? The other coils where not tested at the same dwell time and the R8 coil was not tested at dwell times above 2.5ms. I bet is that the R8 will also score very high when dwell is increased as they do not differ much from the B58 coil.
The R8's perform better at 2ms dwell than the PR's at 3ms!
My bet is that R8's at 3.2ms dwell will also result in a top 3 finish. Meaning R8's are probably the coils to buy. At least over the PR's because R8's pull no current through the DME. This could potentially mean that the PR's perform like this with a clean power supply in the test but might not reach this performance in real life because of DME current limitations?