Got a 25/40 watt from radio shack. Cheap and works great plus flexible wattage. It was more than 2 bucks, but less than 20 I'm pretty sure...
Even if you look in the vault, you'll find somewhere in there that holding a lower wattage iron for longer can do more damage than holding a higher wattage shorter.
Markk, I hear the 100W gun is not good to have around pickups due to it putting off a magnetic field. It could de-gauss magnets. I am not positive but, I have heard this before.
:bigthumb:I use a 40W Weller with a variable wattage station. I like it because I can drop the wattage down if I'm worried about getting something too hot. Any 30-40W iron should serve you well, though.
Actually, wattage translates to heat in a resistive circuit like a soldering iron. The difference is that on a large gun the heat is transfered throughout the large tip and probably is more like a lower wattage gun in any specific area. It will hold it's heat longer, though, and heat up quicker.There is no difference in the heat. A 30 watt, 60 watt, and 100 watt will produce the same heat.