We have had this discussion so many times.
I sailed a modified full keel, a Union 36, from Houston to Scotland. It tracked well, and was stable. It does not go to weather well, but no-one in their right mind would want to go to weather in an Atlantic breeze of any strength. It's awful, and beats the heck out of the boat, whatever the boat is.
Certainly, a deep fin leaves me standing in light airs, and out-points me every time, but in the rough stuff, downwind, watch that helmsman, correcting, and correcting. Upwind, neither of us want to do it anyway.
Also, the long keel inherently has to endure less stress... now I did not say force... I said stress. We don't snap off so easily. Often we're cast into the glass so we have no keel bolts. We are definitely slower but more stable directionally.
Give me the long keel, or modified full, every time...
Good luck, what ever you choose.