I recommend the Hakko line. I own this one, The Hakko 936 with a 907 iron:
http://www.eham.net/reviews/detail/2871
(amazon link)
http://www.amazon.com/Hakko-Soldering-St...8264&sr=8-2
It is very high-quality, and heats up in literally a few seconds. You can order a multitude of different...