This is the soldering station I purchased about a year ago:
Radio Shack Digital Soldering Station
It has a temperature control, and I use the highest setting for most work (around 620 F) with rosin-core solder. I suppose you could drop the temperature if you had a different solder or were working on a component which was particularly heat sensitive.
And while people may scoff at Radio Shack products, for me this unit has worked extremely well. No problems, and I haven't even changed tip on my iron! The only upgrade I did was to cut a thicker sponge for cleaning my tip - and I constantly clean the tip while soldering.