I'd have gone with the SRG over the torch too, but then again the extra cooking wouldn't have bothered me a bit.
Just my opinion: For beef short ribs those are way too underdone for my taste.
The sous-vide isn't the issue; it's the cooking temp. I like short ribs cooked all the way through with much the fat rendered off. If I want a piece of meat that's med-rare, I'll go with a good steak.