I'll note that a heat gun can MELT SOLDER:
Try doing that with a hair dryer
Heat guns are serious tools, but if you really don't plan to use the heat gun for anything else... I'm not sure it's worth the investment. They're not exactly expensive, though. If you're buying fresh and you know you won't use the hair dryer, it's a no brainer, here. You don't need (to be) einstein (haired) to figure that one out.
I got mine from Grizzly tools a long while back, pretty much any will do.