• Is your brake held in place by an external hex nut, or a recessed Allen head nut?

    Assuming it's the latter, then any dual pivot brake will be fine on your commuter: the brake cables and brake pads will make more difference to your braking, than the caliper.

    Spending more buys you a shinier, lighter brake which won't improve the actual braking.

    Find the nearest shop and grab a Tektro or Shimano caliper.

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