Two different targets, I have used both. I have so many 5V power supplies sitting around, they git in the way. Including 12v/5v buck converters for auto stuff.

Two different targets, I have used both. I have so many 5V power supplies sitting around, they git in the way. Including 12v/5v buck converters for auto stuff. You can configure for headless when you set up the SD card before you ever boot. I have never booted a Pi with attached display/keyboard. The Pi is cheap, for a reason, but it is still more powerful than anything I use it for. But the same goes for the Beagle Board. Choose the board you want, for the project you are doing. Note: For every RPi project I have done, I have done two or three ESP8266/ESP32 projects along with five or six AVR/M0/M2 Arduino projects.