Been searching for the same myself, depends on you main hunting area a bit, for most of the world a 338 is hard to beat 160gr to 300gr, great for NZ & nearly ever where else, if mainly Africa I like my 9.3X62 this is a awesome caliber & a 458Win !

The 375H&H is also great but not as great as everone makes out, hate that long throw in a tight spot had 10's & 10's of clients short stroke these & make a mess !

The .375 min in Africa is over rated to, I bet no one has been stopped from useing lesser bores on DG hunts any where & it is infact not mandatory in most countrys but a recommendation !