For what it's worth...

I use a Weller TCP1 I bought used probably 30 years ago, and it was probably 20 years old at the time. I think it's their first temp controlled iron, controlled by a magnet in the tip. To change the temp, you change the tip. 45 watt. No features at all, I even had to add an on/off switch. I've never wanted for another iron. I have always used a 700 degree (f) tip. It can solder fairly big things.

About five years ago I bought a small controls company and the TCP1 has been our production iron ever since.

Simple things are best...