In case you have not fond this yourself (via KVR or other sources) I'd like to inform you of this:
you can vote for which REX loop library will be given away for free.
To me their "refills" look really nice. I'm in no way affiliated with them besides participating in the vote* (thou I might become a customer
I posted this in the general section as the offer of free REX loops might also be of interest for people using other audio software.
* go action drums!