Buy the Weller WTCP51 and forget ever having to buy another for 20 years. I've been using one now for ages and it's the best soldering station I've ever used. You get temperature control from the purchase of various tips which according to their individual composition/magnetic properties, determine soldering temperature. Weller have a chart for these and there's loads of tips available, all reasonably priced and which will last years.

Avoid soldering stations with complex digitally controlled temperature control. I've been through a few of them and none were much cop, plus they all failed within the first few years of use.