We have had 3 of these around our field, I would say 2 were in the shaker class and 1 was more than a twin but not all that bad. To my knowledge they were all tuned well, however I know one of the shaker's owners probably has it a hair rich knowing him.

Personally I am a big fan on a ZDZ Super 80, they are very smooth for a single and really come to life with a pipe. Not quite as much power as the 85 I dont think but good power for sure.