Thanks for the link Luke

I'm pretty sure I have the ally ones. Wouldn't know what impedence they are, I'd need to find the box, but I'd probably agree with you on 4ohms.
So that leaves me with the question, is it really worth spending that much, or should I just get some cheap ones?
I don't have much chance to really appreciate the SQ anymore since I usually drive with windows down, loud-as wind noise and passengers generally blabbering on and on.....