The best of these kettle met my criteria, though not completely. Unfortunately a little Platik is installed for the water level indicator yet. But my God. Second negative point that the LED - display burns permanently. That would really not have to be. I'm going to buy a safety plug with manual switch, then the problem is solved at least.
Here are my pros and cons:
+ Little plastic
+ No heating elements inside
+ Super Design
+ Pre-adjustable temperature
+ Is - temperature display
+ Hinged lid mechanism
+ Water flowing from well
- Lasting LED display
- Plastic components
Nevertheless full purchase recommendation. Have fun with it.