There's no wrong answer on this one. I've had a Mauser .35 Whelen AI for almost 30 years - love it. Recently got a Mauser .338-06 - love it too. About to get a circa 1934 Springfield rebored to 9.3x62 - pretty sure I'll love it too.
Reality is the 35 WAI (using the awesome Power Pro 2000-MR powder - game changer in the Whelen) beats the other two, but who cares, they're all fun and they are all great medium bores.
Cheers,
Rex
