Stumbled upon this reasonably recent study and thought it interesting:
https://www.skogforsk.se/contentass...omparative-study---arbetsrapport-918-2016.pdf
Skipping to the conclusion:
Conclusions
Of the new chains, the Carlton B8, STIHL RMH and Oregon 18HX had almost identical cutting time and energy consumption. The STIHL RMHS had shorter cutting time (~6 percent) and lower energy consumption (~7 percent) than the other three new chains. These differences were statistically significant with a very high degree of certainty.
The sharpened Carlton B8 chain had shorter cutting time (~9 percent) and lower energy consumption (~10 percent) than the new Carlton B8 chain. These differences were statistically significant with a very high degree of certainty.
The bar feed pressure in cutting was lower for the STIHL RMHS and the sharpened Carlton B8 chain than for the other three new chains. The difference was approximately 6 percent and was statistically significant with a high degree of certainty
https://www.skogforsk.se/contentass...omparative-study---arbetsrapport-918-2016.pdf
Skipping to the conclusion:
Conclusions
Of the new chains, the Carlton B8, STIHL RMH and Oregon 18HX had almost identical cutting time and energy consumption. The STIHL RMHS had shorter cutting time (~6 percent) and lower energy consumption (~7 percent) than the other three new chains. These differences were statistically significant with a very high degree of certainty.
The sharpened Carlton B8 chain had shorter cutting time (~9 percent) and lower energy consumption (~10 percent) than the new Carlton B8 chain. These differences were statistically significant with a very high degree of certainty.
The bar feed pressure in cutting was lower for the STIHL RMHS and the sharpened Carlton B8 chain than for the other three new chains. The difference was approximately 6 percent and was statistically significant with a high degree of certainty