As was said above, for general wire soldering, and partcularly wire to track soldering, my go-to is the Weller 100-140 watt gun. Can't beat it. Mine cost about 7 bucks back in the 60's. It's a great testament to product longevity that you can still buy replacement tips for these most anywhere, including HD.
For pcb and fine component soldering there are lots of choices, but I love my Hakko 928 two iron station. And my travelling Circuit Specialists 70 watt unit works great too.
I dont do much, if any, smt soldering, but I am sure grj's comments about that are right on!
Rod