So let me start of buy saying, aqll spider are aggressive or defensive some spider more than others, most of the the comments given above are a bit incorrect, none of those spiders are aggressive, they are fast they have V8 attached to their body and they can move when the time calls for it.
With your exception, you will get a threat/defense pose from both the spiders you mentioned.
The
P. regalis is fast as all pokies are, but that is not the normal nature of these beauts, they have more of a tendency to hide away and do there long you can't see pose.
Also it comes down to your wants, needs and how comfortable you are in dealing with the spiders.
So here are 2 spiders that I have had for 4 years now.
Psalmopoeus cambridgei
Attachment Spiderpictures338.jpg not found
Psalmopoeus irminia
Attachment Spiderpictures027.jpg not found