I purchased a Weatherby Vanguard Series 2 in 243 Winchester and I am very impressed with it so far. I have shot a number of sub MOA groups including a 1/4" group with it.
Given the choices you list I'd opt for the 30/06 as it gives you more bullet weights to choose from. Prior to purchasing though I'd inquire if I could get the same deal in a 7mm Remington Mag.
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