I am definitely a steamer, but I also want to be able to turn the steam off without having to drain the water.
The ceramic soles found on many irons really does help it glide.
Generally, the higher the wattage, the hotter it's going to get - thus getting more stubborn wrinkles out. That said, I was recently pressing several FQs and found that heat and steam were not getting the fold lines out. I had to spray them with Best Press. I laid one down, sprayed lightly, stacked another on it, repeat. I did that with maybe 8 or 10 at a time and it worked beautifully. By the time I got to the bottom of my stack, those only needed a quick once over as the fibers had relaxed and warmed from the pressing of those on top.