I've owned two ST205s, one standard and the other modded to around 330bhp.
As standard, i was underwhelmed with the performance. I think there was quite a bit of power loss due to the transmission.
The modded version was much better, but I only had it for six weeks as I got an offer on it I couldn't refuse.
Fantastic looking motors in my opinion, but the 4wd wasn't anywhere near as good as something like an Evo5.
They still seem to be good value for money, so if you need to scratch the itch do so before they go silly money.
http://i949.photobucket.com/albums/ad333/muckyman1/88C1871D-66DD-48BB-B27C-88F25BC6883F.jpg