Gastric sleeve or gastric balloon

Iam 42 years old. Weigh 173 n 5'5" tall. I've been diabetic for 24 years since 1992! Iam on insulin pump. I hear gastric sleeve might take away my diabetes. If this is so I would do the gastric sleeve in a second! But since my bmi is only about 28-29 I'm contemplating if the balloon would be better for me. Which one should I do?

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