Decent 12V Soldering Iron

[Frecklychimp]

As title, anyone know where i can get a decent high Wattage 12V soldering iron with a good sized tip?

Looking for new rather than anything used and abused,

back in the day i had a really good S.P.E.C racing or WASP one, with different sized replaceble copper tips, it's long gone but i want something similar,

What do you guys use?

had a quick t'internet trawl but didn't find anything that looked up to the job

Mark