While heating performance is not that big of a deal to many 3D Printing Enthusiasts, I find it to be an excellent benchmark of how well a printer's hot end is designed. Printers with too much thermal mass will take a long time to heat up, while printers with too little will heat very fast, but take longer to recover from a long, fast extrusion that saps the heat away quickly.
To test heater performance, I place a type K Thermocouple on the heater block opposite of the heater core. The Ord Bot Hadron really shines here with a heating time of 1 minute and 19 seconds to heat from room temperature (23C) to 200C.
The Ord Bot Hadron utilizes a 12V power supply and a standard 200mm-class heated bed PCB with a standard borosilicate glass top surface permanently attached. It took 4 minutes and 39 seconds to heat from room temperature (23C) to 100C.