Weak Auras are the most versatile. You aren’t tied to other people’s settings either, just create your own based on resource, they have the settings already in the addon so it’s pretty easy to set up.
Just have them trigger at each HP generation state and choose the icon you want for it as well as it’s size/colour etc.
It’s highly modifiable.
You could probably make it almost identical to your old addon even if you wanted.