I would avoid hay with foxtails. They're a pain in the butt, and get stuck in everything. And at least with horses, the sharp seeds can get stuck between the gums and teeth and cause an infection. I don't know if the same thing can happen with rabbits. It's really hard finding a good quality hay when looking at ads. I know, I just wasted my whole day going to get hay that I was told was good quality horse hay, and when I got there it was crap and only good for cows. You will probably have the best luck getting good hay from a farmer that bales more than a few hundred bales. The more they do, the better quality the hay will probably be. Also ask what type of grass it is. If they can't tell you, then best to not get it from them. Also don't get fescue grass hay, as sometimes it can contain mold toxins. You don't want weeds, or hay that has gotten wet since it was cut. You want an excellent quality horse hay, and the more you have to pay, the chances are the better quality it is. Better to pay a little bit more and get a good hay, then end up with junk.