Palm heel or fist to the face?
What do you think is the better basic move to use on the street? In the ring, of course use your punches! You have gloves for a reason, but for your own protection, what do you think?
As far as I can tell, palm strikes are powerful enough to knock a guy out, but not as powerful as a fist. But they are also safer on the wrist, and allows you to strike more areas without worry.
On the other hand fists are very natural to most martial artists due to sparring, and arguably have more knockout power. Especially if you are a boxer, but without those gloves on, the power transmitted to your fragile hands could mess you up.
Personally, It seems palms are the better choice, but I still find it hard to naturally default to them over punches.