I bought a couple of used "rework stations", one made by Pace and the other by OK Industries. These are the kind of station that include 5 or 6 different tools into one "system". The ones I got were missing bits and not entirely sound, but the hot air pencils work just fine.
After looking on Ebay, perhaps something like a Hakko 852 (or one of its competitors) would be good. There are some for sale on ebay for $100 to $200. I've used Hakko products before and they are good.