re: "... wonder if there are any other types of tools that Snap-on does much better than Craftsmen?..."
Frankly, I've found that only the brake lines' fittings seem to require the extra precision of the Snap-On flare-nut wrenches -- I myself have a variety of tools from other companies (Craftsman included) and I've never had a problem with them except with the brake lines. I think it's a combination of possibly softer alloy metals used in the brake line fittings (perhaps anticorrosion priorities) that make them more apt to "round off" if the wrench doesn't have a good-enough grasp.
But there is a noticeable difference between Snap-On and other brands: you'll find that you will push or press the wrench onto the nut, proving a snug fit, whereas the other brands slip on too easily.
And I've also been told by others on the 200 forum that, beside the precision of the dimensions of the Snap-On wrenches, there is also the matter of the "jaws" flexing -- the Snap-On wrenches supposedly don't distort like other brands, so they're not going to slip because of this, too, whereas other wrenches may be weak enough to widen as you force them. Of course, that much strain shouldn't be needed on the brake lines' fittings, especially if you pre-treat with PB-Blaster.
Case in point (my worst), I was working on the lines of a (then) 26-year old car (original lines!) -- they were really stuck, but I didn't want to force them and maybe twist the metal lines or otherwise distort them. So after first spraying just once with brake cleaner just to clean the area so the PB-Blaster will penetrate better, and then pre-treating (spraying hourly) over a whole day with the PB-Blaster, the next morning I just put the two Snap-On wrenches on the opposing nuts forming an acute angle, squeezed them in one hand, and they loosened. No need for a torch or anything else! That made me a believer!
Good luck -- I hope your lines are as easy as that!
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