Personally I think the 416 dokota beats any 404 or 416 out there, the weatherby included. Also the 450 dakota is very impressive.

Personally a .375 and .458 would make a fine double battery. I'd chose the 375 dakota or 375 weatherby and a 450 dakota or a 458 lott.

With the 458 Lott you can use 458 wichester ammo in a pinch and with the 375 weatherby you can use 375hh ammo.