just use whichever one groups the best out of your gun. realistically the deer wont notice.
This!^^^^
I have used everything between 110's and 180's in a .308, and put meat in the freezer with all.
My observations have been that extreme speed can make more of a mess than moderate speed does. Still just as dead. Esp. on a poorly placed shot. Choose wisely, and you can get away with a lot, as far as that goes.
The two biggest messes I have seen have been a slow moving 180, that I spined a buck with, that cost me a lot of prime cuts, and a fast moving 130 that a friend shot a small doe with at ~25 yards, square on the shoulder, with a hot loaded .300 Win Mag. That one cost him almost the entire front quarter. So. Placement!
Cup and core bullets are inexpensive and effective, and if you are not driving them at Gopher Gun velocities, they simply work.
To me it's not so much about cheaping out, as it is about spending enough to meet my needs, and not a bunch more. If I can buy twice as many bullets for the same money, and they work for me, I get to shoot twice as much, or for half the cost of Premium stuff that does not shoot better for me.
Try a couple different commercial loads and pick the one that shoots best, if you are not reloading, otherwise try what seems to draw your attention, and if it shoots well and gives you confidence, stick with that.