Have you kept anything before that eats crickets? If not, I'd take into consideration that they're a huge pain in the rear to deal with. I used to keep mine in a container a bit smaller than a 10 gal filled with cut up egg cartons and toilet paper rolls, with Fluker's gel cubes, but they never lasted very long anyway so I was always using up 30+ miles worth of gas just to pick up those damn crickets. They can also be annoying to remove from the container for feeding, especially if you're a bit squeamish around bugs like I am. And they'll chirp; allllll night long, and during the day too.

Bias aside, if it was me choosing, I would go for the ball purely because it doesn't eat crickets. Dead rodents don't chirp or need to be kept alive as sacrificial mini-pets.