I've also heard fox labs was quite good. I have been sprayed with First Defense several times in order to get certified to carry it (base security). Be forewarned OC doesn't affect everyone. It also only buys you time. It took me about 25 seconds to blink it out and start beating on the Red Man aggressor. It hurt enough that I wanted BLOOD! Make sure your girlfriend knows to use it and run some where safe, there is no reason to stick around.