That’s a very good but almost impossible question to answer… for me.
I think it depends on the mood, I know that sounds silly but what I mean is what type of shooting I’m going to do.
If I am just plinking, nothing is better than my Beretta Storm carbine in 9mm. Just plain fun.
If I am in the mood for military guns,,, there is nothing better than my Grand. With a bolt my 03-A3.
If I want to work on my trigger pull and concentration my heavy barreled Winchester 75 with very good peep sights.
For long range my 700 with a very large X36 scope.