Just watched this - just so helpful and uplifting for someone like me who totally stuggles with this. I know there are some very technical and knowledgeable folk camping down on Basschat - which is brilliant - but I wanted to shout this video out as I found it very helpful. Maybe obvious to some and I guess much of this I probably know, in theory, but Mark explains it and tells the story so well.
Get your bass tone from the ground up - the tone controls should be the last place to look for your sound. I now understand why people have loads of basses. I finally have a reason to start accumulating basses 🙂