IMO...
I guess it all depends on what you are soldering. I like, and still use, an old Weller 100 watt gun, with the replaceable copper tips and 2 small light bulbs, with on-off control. It works great for electrical and electronic works. For precision electronic work, like printed circuit boards, a small chisel point low wattage (20-30 watts) soldering iron works best for me...it just takes a little longer to heat the joint. I also have a low wattage DE-soldering devise that vacuums the molton solder away ftom the connection point. BTW...use only a small diameter ROSIN CORE solder for electric and electronic work NOT acid core. I've used Ersin Multicore solder for years with great success. Unfortunately, tin-lead based solders are becoming hard to find, especially for soldering copper water pipes. And silver based solders need special fluxes and very high temps to work.
If you are contemplating soldering copper water pipes or gutters and downspouts, or copper radiators, obviously you will need more firepower, like a torch, albeit propane/air or MAPP gas/air or acetelyene/air.
Just my opinion of course.
BOB RENTON