I use and have the gf carry Fox lab 5.3 for pepper spray. I had a tazer before but felt it was just a pain in the butt, ended up being more of a dust collector so i ended up[ selling it. And remember you only get one shot with the tazer then it becomes a close contact type of thing.
I use fox 5.3 because it seems to be the hottest at 5.3 mill shu, while others i have seen only go up to 2.5mil or even 3mil.
edit to add:
when i purchase pepper spray, i only get stream type sprays
http://www.galls.com/style.html?asso...og&style=SD112