Max4, 25 + years ago I was faced with the exact same decision you are facing now; either a new Ruger M77 or a new Winchester model 70. The calibers considered at the time was either .270 or .30-06.
I ended up with the Ruger in .30-06. It was the "sensible" choice because of, in my opinion's, Ruger's superior design characteristics at the time. The .30-06 caliber won out because moose was also on the agenda and I felt it was a better caliber due to the heavier bullets it used.
Today, to change things up, I'd do the exact opposite! The new Winchester Model 70 Featherweight is a far nicer looking rifle with much better workmanship than back then. As mentionned before by others, go have a look, handle both and see which one feels best in the hand and which one lines up best up on the shoulder. Then decide.