I'm 60 and so have been ironing with steam irons for years.
This (Philips PerfectCare Steam iron GC3920/26) is the first one I have tried that uses the OptimalTEMP technology. It is so much better than anything I have used before. The soleplate is always at the lower temperature you'll ever need because the steam is generated by a device inside the iron rather than using the heat of the soleplate itself. This means there is no need to fiddle with dials or wait for temperature adjustments and I imagine the soleplate is no longer going to get gunged up with burnt on material (from residual low temp fibres on high temp clothes).
It is light and easy to use and comes with a really long flex.
I was unsure when I bought it - took a risk - I am so glad I did.
I am astounded that it has taken so long to come up with this new approach to steam irons - perhaps it is hard to make or perhaps, like so many simple ideas, it needed a fresh look from a new mind in the business.
Well done Philips!! Fantastic.