Sotalol is an antiarrythmic in the same class as amiodarone and is an appropirate second choice given the fact that you are intolerant to amiodarone.
However, another question you should ask is how are they treating your hyperthyroidism, because this can have serious health consequences including inducing more ventricular tachycardia. Amiodarone most commonly causes a fairly reversible form of hyperthyroidism but can also cause another form which is difficult to treat. Make sure you know which for you have.