Hi Paul,
Thank you for ur text. They both are (were) really good basses. Unfortunately I had to let go of the 6 string. To be honest, I never tested side by side using exact same brand of strings as my Epic 6 always had Alembic strings on it and the 5 has D'addario. Apart from the tonal defferences in the strings, I haven't noticed any 'major' tonal difference Paul. There was a slight difference in brightness and I thought it was due to the strings. May be I was wrong. I'm not a 'pro', more a hobbist 😊. All in all I didn't notice a huge difference between them. Both had my Fav deep Alembic unique tone 😅😅
Sorry if I didn't answer ur question properly.
Sam