I have struts and springs off of a 2006 WRX. Cobb springs have been on there as long as I've had the car. I'll be the first to say that they look like hell, but they have worked for nearly 40K miles. I recently upgraded to a full coilover cause felt I needed to balance out the power with more control.
I'd love to be able to trade for some other upgrade in any department (power, control, astetics), but if you wanna buy strait up, I think 425 sounds like a fair deal.
Any questions, feel free to PM me.