I get asked at least once a week by email or YouTube comment what soldering iron I use so I thought I'd just share.
I use a Hakko FX-888D. I bought it ~4 years ago used from a guy who quit modding and it replaced the iron that was built into my Aoyue 968A+ that I still have and like a lot. It has a huge library of possible tips, and digital temperature control. I run my iron around 470C, which is hot but I work fast. Beginners may want to try starting around 350C and moving up 30C at a time until it feels right to you.
Before the Aoyue, the first decent iron I'll admit to buying was this Stahl Tools SSVT iron. It's a bit slow to heat - but the variable temperature is a must so you can dial in to what works best for you.