In 38+P they're mediocre at best. I would give those a skip.
In 357, they're another attempt to make a slightly "de-tuned" 357 for the smaller guns. And it's not bad as such things go...has a little more heat on it than Speer's 135gr 357 "short barrel specialty load", about the same power as Cor-Bon's 125gr DPX.
If I wanted something in that class, and they do make a lot of sense in some situations, I think the DPX probably spanks the Golden Saber but the DPX is more expensive and hence harder to find. The Speer 135 (357Magnum flavor) runs less raw energy than the Golden Saber or DPX, but then again it has that typically reliable Gold Dot expansion. The GS125 and GD135 (both in 357) are likely in about the same ballpark in terms of effectiveness, maybe a slight nod to the GS. And the GS is likely the cheapest and easiest to find in this niche category.
These low-powered 357s are pretty decent as a basic concept. They're about as effective as the very best 9mm+Ps. If you have a smaller/lighter gun and don't want to drop all the way down to 38+P horsepower, the low-end 357s make sense, including the GS.