The Weller Pyropen is one of the best portable soldering irons out there. I like them because I get almost an hour and half of heat, and I can move around — no cords. So, while I have an electric soldering station, I almost exclusively end up using this Weller, even when I'm near the station. I just find it easier. So, you switch it on, it lights the butane up, and it makes this cool high-pitched scream. And when it glows red, it's very hot. It heats up faster than an electric; it will reach full heat in about 30 seconds. I love these things.
Available from Weller
Note: According to a spokesman at the manufacturer, the Weller Portasol (PS100), previously reviewed on Cool Tools here, and the Weller Pyropen are nearly identical products. The Portasol is about half the price and has a slightly hotter max temperature and is made in Japan. The Pyropen is currently made in Ireland. Both are considered the same high professional quality. –KK