Best rootstock for almond in zone 9a

Howdy. I am looking to graft a Marcona almond cutting onto a rootstock but I am looking for advice on what rootstock to use. I live in tucson which is zone 9a. Any suggestions would be much appreciated.

I don’t know a lot about almonds but for the other stonefruits here in Phoenix you will mostly see Nemaguard or Hansen being used.