Eric-
I'm not sure what the performance is like, but it looks a lot like what Lowe's is carrying in their Kobalt Portable Compressed Co2 Regulator... http://www.lowes.com/lowes/lkn?actio...735-J-6901-100
Lowe's is $9 cheaper too.
Here's some good discussion about the Kobalt ...
http://toolmonger.com/2007/03/09/hot...k-for-nailers/
I've personally considered picking up the Kobalt regulator.