Cactus Is Better
Less laggy way to "fire farm."
The drawf star causes the pig/bunny house to burn releasing a pig everytime one dies.
The outside fertilized cactus kills the mobs on the inside over and over again.
The inside unfertilized cactus can't burn, items can't pass through them, and the ice flingomatics will constantly fire ice at them. It essentially keeps the outside cactus from catching on fire and getting attacked by the mobs - and also keeps the item drops contained.