Laravel Best Way to Create Custom Validation

I am using Laravel 5.7 and i have many custom validation requirement.I have searched many tutorial but i found below two ways in latest version

First method is adding rule inline like

    use Illuminate\Validation\Rule;

    Validator::make($data, [
        'zones' => [
            'required',
            Rule::in(['first-zone', 'second-zone']),
        ],
    ]);

and second method is extending validation but in this method i need to create instance of that class but it looks not good when we have many custom validation 


lass Uppercase implements Rule
{
    /**
     * Determine if the validation rule passes.
     *
     * @param  string  $attribute
     * @param  mixed  $value
     * @return bool
     */
    public function passes($attribute, $value)
    {
        return strtoupper($value) === $value;
    }

    /**
     * Get the validation error message.
     *
     * @return string
     */
    public function message()
    {
        return 'The :attribute must be uppercase.';
    }
}

and one more method is adding validation in service provider .this is best way but i have many custom validation so it might grow more larger in service provider

Validator::extend('foo', function ($attribute, $value, $parameters, $validator) {
            return $value == 'foo';
        });

Last one i found old answer in stackoverflow

Custom validator in Laravel 5

this is the best one i found compare to other. Now my question is any good way to create custom validation in latest laravel version

via Chebli Mohamed