The fact of the matter is that the Healing Brush is an extremely powerful and time-saving improvement, even for those who have previously mastered the Clone Stamp tool.
Whereas the Clone Stamp tool forces you to think about things like matching color and tonal values, the Healing Brush does most of the thinking for you.
The Healing Brush works much like the Clone Stamp, except that as soon as you let go of your mouse button after placing a sample, it tries to match colors and cause your work to blend seamlessly.
However, there will be times when you will want to don your traditional cloning gloves. Even masters of the Healing Brush will have to resort to the good ol' Clone Stamp tool from time to time.
One case in point: When your "healing" is happening on a contrasty edge, using the Healing Brush will likely cause a strange glow to occur. When you see this glow, consider using the Clone Stamp tool instead, following the step-by-step instructions found in our article on rubber stamping:
The Healing Brush is indeed an awesome feature of Photoshop 7+. Mastering it and occasionally falling back on the Clone Stamp tool will give you a huge advantage when it comes to correcting and restoring photos.