Ive been slowly "upgrading" my equipment. The actual "upgrade" items were far less costly than the journey to figgure out what exactly what i wanted in a "upgrade"
Imo if you KNOW what your buying will FEEL like an upgrade too you, no reason not to. If your considering pieces of the package as an upgrade, then imo try to get as much time behind the type/make/model of product your considering before actually buying...sometimes youll find that one thing, you just cant stand.
My easiest example is the model 70. I like everything about the rifle (not love, but good solid like), except the wing safety.
Just plain dont like the way they feel.
I really wanted to buy one of the high end maple stocked 70s in .264 Winchester, and was ready to sell some of my other guns, including a couple I actually use and like, to get it.
But while working on and playing with my FILs 70, i found that i really dont want a gun with a wing safety....its a dumb dislike in a lot of ways, but its still a major one for me.
Popped up again when buying my new Mesa, its closest contender was a Kimber hunter, or Montana.
Another wierd quirk in my upgrade list would be accuracy.
I want acceptable, but good accuracy dosent matter as much to me as how the rifles feels in my hand (any gun really), how it operates, and how much i enjoy looking at it.
Took a lot of selling and giving away really accurate guns to figgure that out.....