The Caprivi strip is also something one might consider. The gene pool is very good and the buffalo are plentiful. Most impotantly, are no fences in the Caprivi. Price will vary somewhat but at face value will likely be just a bit more expensive than Zim, although when one does ALL the math, it works out to be just about the same. The $2.5k shuttle flight from Harare to the Chewore region compares to $500 for the flight from Windhoek to Katima so things balance off in the end.