First off Olli you need to decide what you want them for and what height you intend to run them at.
Its very hard to get a subjective review of them, because 90% of the time people are only going to big up what they have bought, you are going to have to find a very honest person to come on here and say the bilsteins i bought are really harsh or KW's are over priced.
You will also get a lot of people telling you get these they are made in the same factory as KW.
Well thats like saying buy a 1.4 litre golf instead of a ED 30.
First off decide you budget and what you want them for. You look like the type of person who will have a different car by Christmas.
So you dont really need to go top of the range, So how long they last before they rust or the dampening starts getting poor is not your main consideration.
I would look at something like the Weitec range, i have no personal experience with these but they will be a similar range as the Spax.
and get bought more for the Mk 5 platform so you should get a better idea of whether they will suit your purpose.