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This may sound a bit counter-intuitive but I would recommend Thomastik Jazz Rounds (yes, they're roundwounds) and roll of the tone to taste. They're EXTREMELY light gauge but they have a very unique orchestral vibe with a very nice "bounce" if you can handle the low tension. They are completely different to ANY other roundwound and have no zing or metallic upper mids whatsoever. At least not after they're broken in which takes about 5 minutes. Lovely strings!