Hakko FX-600 is mains powered temp adjustable iron and takes a large range of the standard T18 tips. You can also get the conversion sleeve to run high thermal capacity tips or buy the Hakko FX-601 which comes like that. This is like the portable version of the iron that comes with the FX-888.
Dremel Versatip (which I own) runs on butane/gas which has a few different tips for soldering, hot air, gas torch etc.
Should be able to get both of these tools for $150 combined.