I have to say i was dissapointed with the class 20 jamie goodman soundfile i had from richard at roads and rails and returned it to be reblown to a different sound file.
I felt the startup was way to long and instead of having to use a function key to disable it it should be the other way round, enable if you want to sit there for what felt like forever. I felt the actual engine sounds, espcially as the loco moved off was poor. There was no active brake which was dissapointing also and finally the horns were weak and 'hissy'
As for accurascale, having heard the 37 sound they are doing then that really is good i cant wait for mine