Some good information posted already but I’ll add some to confuse you a little more. LOL
Don’t over look a used rifle for your first gun. There’s a lot of guys out there that just like to keep trying new stuff for a little while then sell it later down the road. I’ve bought or traded for used stuff that were absolute tack drivers. Some were custom builds with glass and all for under 2k and shot very little. Some were just stainless factory production for as little as 400.
There are probably more custom guns built off of a Remington 700 action or one of its clones than any other in the world. Hint. The tika is no slouch and if you believe you’re going to be a one and done buyer it would be the easy button. Nothing wrong with that.
If someone tells me they are going to be a one gun owner and asks for suggestions I usually recommend the 308 because it has such a wide range of bullet weights available for it. Secondly, you can find ammo for it everywhere including the gas station of Podunktown, USA. This is not the case for the 6.5. Just something to keep in mind if you ever think you may travel somewhere.
Think about what your long term vision could be. If KS is the only place you ever see yourself the 6.5 would be my pick, if you think you may want to travel somewhere for a different species you may want to take that into consideration.
New guns are only new the first day after that they are all used.