I have had two top of the line Rowenta irons ( over $100). Both died the same way... the temperature just kept getting hotter and hotter , literally burnt the thread right off the fabric.
I will not buy another. I also found that after I got a cheapy iron some of my carpal tunnel issues were not as bad. I guess the weight of the iron ,and my marathon sewing sessions really aggrivated the situation.
My opinion , loved the steam , hated the cost, hated the limited lifespan.