Zim is likely your best bet, early season will see the bush still pretty thick and buff encounters can be up close and personal. I had such a hunt in the Nyakasanga area near Mana Pools. The area was part of the annual government auction of hunt packages. These have become expensive and just as good options available with outfitters in the northern part of the country. For a balance of cost and good animals I suggest you check out Track a Hunt Safaris. Family owned and operated. A plus is their area borders Lake Kariba so you can get some great tiger fishing in as well as a serious buff hunt.
