I had a mk2 focus ST before my 370z, great little cars. Few points that made me change to the Z was they are terrible off the line, awesome from 30-40mph onwards though. Also I got bored with how many there were around and they start to all look the same, I wanted something a bit less common. Also I think for the money the RS is, you could get a ST and spend the difference in price modding it and it'll probably be around the 400-500bhp mark, much faster than the standard RS you can get for the same price. But it's all preference at the end of the day, I'll agree in saying the RS looks nicer