I have a Weller WSD 81, bought it from oOple ages ago for £60, its the best thing since sliced bread and i know this because:
Its the one everyone borrows
Heats up to 450 in 10 secs (and fully adjustable)
Only ever had one tip which is still like new
and
Manolis built his driveshafts with it at the PetitRC 2009
Stu Evans told me its so good he even dreamt about it one night
Downside is theyre really expensive new but worth keeping an eye out for a second hander, mines never put a foot wrong.