RE: 375 RUM OR 375 H & H?
I think you should get the regular 375 H&H, 'cause if you go to Alaska or Africa with the RUM, you'll never find ammunition for it there near the field.
Unless you adore recoil that knocks the snot out of your nose, get the H&H, 'cause the H&H will hit you bad anyway, and the RUM will do much worse.
Just my 2 cents.