I looked pretty hard at a rechargeable pen style soldering iron, but was convinced by more experienced users and reviewers to get a Hakko. I got the Hakko FX888D. The colors make it look like a toy; believe me, it is not. It's wild how fast it changes temperature, both hotter and cooler: it cools off almost as fast as it heats, which is pretty fantastic. Tons of options for replacing the tip, too. I'm not great at soldering and it has really made me more successful than I have a right to be. Very pleased.