I love my Shark. As SusieQOH mentioned, it has auto-shutoff, but I think it's after 15 minutes, which works for me. It also heats up really fast, so it doesn't take long for the iron to be ready again. It seems to be well made but wasn't expensive. Stainless plate.
It produces a lot of steam, and the reservoir is clear on one side so you can see the water level. It's also easy to fill (my old iron had a very small hole and I had to hold the iron at an awkward angle and generally ended up spilling unless I was very careful, so now being easy to fill is a feature in my mind).