I drove my ST170 for 4 years! It did not let me down once! The only mods I had, were eibach springs, mongoose exhaust and a decat!
My ST170 came with leather recaro's, heated seats, xenon, sunroof... I enjoyed it every second!
It wasn't that fast, but had e few runs against 2 fiesta ST's with even more mods(& bluefin...) and they were supprised what they saw!
It doesn't hold any value, putting too much money in it is useless to me...
Just buy a MK1 RS and you'll be supprised how fast they are with a few tweaks!