It will really depend on your priorities as to new or used...advantages to either.
I have bought many of both and been very happy over the years. Plenty of good firearms and choices out there.
Determine your rifle budget, and scope budget.
Determine where and how you plan on hunting, what animals you plan on hunting, and what type of rifle is going to fill your needs first, and desires second. (i.e. wood or laminate stock vs synthetic, stainless vs blued, blind magazine or floorplate vs detachable magazine, open sights or clean barrel, barrel length- carbine or rifle, etc.)
Best to handle firearms to find the particular make and model that feels best to you.
And even better if you can try out some of the ones you are interested in before buying.