If I had to pick only one of the two, it would be the Security Six. It is easy to shoot well for hunting and for home defense. Because of the grip angle the recoil is much less in the security six as well.
Oh, my, I must dispute this one.
My Blackhawk has much, much less felt recoil and muzzle climb than that Security Six. The .357 magnum, even HOT loads in the Blackhawk are candy. Hot .45 Colt in my said caliber Blackhawk wakes things up, but 357? Might as well be shooting .22LR. That Security Six with a Hogue grip on it HURT on recoil. With the standard grips, it was unreal, but it still had a bad muzzle jump and recoil with the Hogue on it using hot ammo. My SP101 was a lot easier to shoot fast, didn't have near the muzzle climb with heavy loads and didn't hurt my hand with the Hogue on it, though the trigger guard was murder on my middle finger with the stock grips on it. I think the problem with the Security Six was how high it sat in the hand, especially with a decent grip that filled in behind the trigger guard so it wouldn't pound the middle finger. The SP101 sat lower, better geometry.
My Blackhawk has the accuracy needed for hunting, too, which I like. The Security Six was okay for a service revolver, which is what it was after all, but not really what I'd pick for a 50 yard shot at a hog. Might just have been MY gun, but my Taurus 66 4" will shoot rings around that particular Security Six, 1" 25 yards benched vs 3+. I don't generally keep revolvers no better than that unless they are snubbys. Then, they have an excuse.
Hell, I have a 3" barrel 68 Rossi that shoots 2" at 25 off the bench.
STILL, I agree that the DA gun, if you're just interested in hiking and not going to go hunting with it, is probably the better choice if you don't already have any kind of handgun. I won't argue that point. And, if it does have the accuracy, it's as good as a SA for hunting, but I'd prefer a 6" gun, not a 4". I don't think the OP is really interested in hunting and, well, I knew everyone was going to jump on the Security Six and thought I'd give an alternative opinion.
I was weened on single actions, a little SA .22 with a magnum cylinder, back in the 60s, a "Hawes".Then I got into a Colt Navy cap and ball in College. I've always had a preference for SAs as field guns.
Also, if you don't like the pinky under the grip SA technique, you can always add grips to the Blackhawk to give it a more DA feel. These aren't very traditional, but man, talk about your easy shootin' gun with them on it. I don't know what brand or who made 'em, picked 'em up at a gun show used for cheap. What I really like about 'em is the way they fill my hand. I stick with conventional on my .45 Colt Blackhawk. I feel the recoil is better attenuated with hot loads with the old plow handle rolling in the hand.