Glad to see you post the question
I have pretty much narrowed the field down to the two that you are deliberating between.
The manufacturer of the RNP will confess on its website that the RNP uses a Wall Wart power supply as a cost saving measure. On other BBS, some of the more gear-snob oriented users have stated that this give the Brick the advantage.
The RNP also claims to not color the sound. Folks seem to like the way the Brick colors.
Now, with this said, let me tell you what makes me really like the RNP: It is manufactured by an Austin company. As I too live in Austin and am using a Digi 002, I feel compelled to support the local biz. You know, keeping Austin wierd. However, I am still trying to decide.