I believe Tahitian lime = Persian/Bearss lime, though I wouldn't bet my life on it. Kaffir lime is definitely a totally different species (Citrus histrix) and definitely will not do the job you want. The leaves are critically important in Thai and Indonesian cooking (and I believe rind of fruit is also used), and it is true they have a wonderful, very strong and lingering aroma. But the juice is unpleasant, and anyway however wonderful the aroma of the leaves/rind is, neither it nor juice is similar at all to "regular" lime. I have no idea what Brazilian lime is, but of course if you knew the size of the fruits or whether they have seeds or seedless, you'd be able to pin down which of the two types it is. Either of Mexican/Key lime or Bearss/Persian lime would do fine, though, both being reasonably similar in flavor and aroma. --- Brent