We've only ever used russells and borders so couldn't comment on anything else, but they're both good for bushing. The russells aren't so keen on the real thick cover, I would presume because their coats and skin aren't so thick. The borders have got elephant skin and are double coated and will crash through any brambles, stingers, whatever really. The longer legged russells tend to hang around the edge of the cover following the other dogs yips when in a big pack, much to the annoyance of their owners, but this tends to be a good thing as they're the faster dogs more likely to catch the pr