Personally I've never like Weller irons, I've always used Antex.
Unfortunately my Antex A545 (45W internal temperature controlled 24V supply) soldering iron at work has just died!. The elements OK, but the PCB isn't feeding power through to the element. I've got a spare element! (but don't need it), and unfortunately this model was discontinued over ten years ago (according to Antex technical).
I'm currently considering what to do! - the workshop is wired with sockets fed from a 24V transformer specifically for these irons. Looks like I might need to rewire with mains sockets for Antex soldering stations?.
BTW, at home I use an Antex TCS 50W, a similar internal temperature controlled iron, but 230V rather than 24V - just like the A545 it has a temerature adjustment preset in the handle.