Kye, I have a crockpot and I don't think you can make rice in it. I don't think it would get hot enough to boil so the rice cooks. On the other hand, I've had some crockpot recipes that had rice in them, I think. Not sure. Personally, I'd probably invest in a rice cooker. My DH refuses to buy another appliance or I'd have one!
They are pretty cheap and very handy. You can also make brown rice ahead and freeze it so it's easy to use later.
I just buy the big bulk bag of brown rice at the store. Not sure if any brand is better than another.