Here's a few I like

medium bore

300 H&H Flanged - for those long range 'pukka' expeditions after ghooral

6.5x68R - a hot shot with a single barrel. What better rifle for tahr and chamois in the South Island than a 6 lb single.

And Mickey mentioned it but the Blaser 30R really does have quite an appeal. Never seriously looked at its ballistics before but not bad!

And for the big bore .577 NE of course. Want one of those one day

And a 4-bore