I am really surprised that you are all saying the 2006 model is the better one...... I had the 2005 one and from what I've been hearing from someone at Ford, the 2005 ones are liked more by the general public and they are requesting the older shape rather than the new.
I must admit the dash was a big improvement in the 2006 model, but the lights don't do the ST any justice...... not on some colours anyway, especially the blue one...
I do miss mine though..... might just have to re-invest and find miself another one in a few months time.