I've tried expensive irons and cheap irons. I recently got a Shark Ultimate Professional Iron (less than $40 on Amazon.com), and really like it. It has 1800 watts, various bells and whistles...but the feature that made my decision is the automatic shut-off. It will stay on for 15 minutes before shutting off. My previous irons shut off in less than 10 minutes, and then I had to wait for them to warm up again.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1