I highly ecommend Lelit industrial irons. 5.5 bar pressure I believe. 7.4 kg (16.5 lbs) I presently use a Laurastar that is also good.
Here's Lelit though I reckon they have cheaper models -- https://www.ironingsupplies.co.uk/view_product.php?product=PS25
Laurastar -- http://www.laurastar.com/en/products/steam-irons/laurastar-g7/One
pass over thick and crummy oxford shirts that I use for rough work and, hey presto, there's nary a crease.
Also, the steam generated is copious, so much so that I can 'steam' the minor creases out of my coat sleeves.
Cool looking too.
*Though when I was based in the States, I had all my shirts dry-cleaned. Cheap and way more time-efficient that way.Edited by bboysdontcryy - 2/6/13 at 10:12am