Hey Sugar, I'm uncertain if I'm reading the above correctly, so not sure if this is what you're looking for or if it will be helpful to ya. But I use PS-CS4 and have noticed that if you leave the brush panel open, you see where it says 'brush presets' on the top left and 'brush tip shape' underneath it. ... If you click/highlight 'brush presets' you will notice that when you select a brush in the panel, the brush dynamics will change to the assigned presets to that brush. But if you have the 'brush tip shape' highlighted, when you select the brush, the settings do not reset to the default settings for that brush, but stays with the settings you are presently using. Hope that makes sense, if not let me know.
PS - I don't use many brushes myself, and usually right click with my pen to select them. If you do this as well, it's like having the 'brush presets' selected, so the dynamics change with the brush selection. ... if I know I don't want the dynamics to change, I simply keep the brush panel open and select from there instead.
Hope this was helpful.
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