Quite happy with this device. The 5A power adapter and USB power delivery are definitely a plus. Three memories for quick access to frequently used settings are a nice feature. However, there are two things to note: The tip sleeve that holds the soldering tip in place often comes loose simply by hand tightening. Check it regularly to make sure the iron is working properly. The plastic handles of the power clamps are not fixed. One got lost somewhere while moving his 853d from place to place. 8-( Tighten before shipping.