If thats what your into then fair play. Was tempted to get a cosworth but was scared of the reliability with the need to use it every day.
I love my ST, one of my 'lotto cars'. Also my first real 'fast Ford' apart from an XR2i I had for my first car. All the others were just run about old sheds.
Must admit I love the surge of power from the turbo, even more so after a remap
As the Mrs says "that car is your baby".