This campaign is quite good, in that:

1. The rates are the same at the SAS website as at Hertz - i.e. you don't pay extra for the additional points.
2. The rates are actually better than other CDPs that I usually compare with at the Hertz website. I've never seen that before, IIRC.

So, I've actually booked a rental one the SAS website, first time for me - it's never been worth it before!