Best to use PayPal.

If you use an alternative, that means your clients must pay you via the alternative method too.

This means a long conversation/pitch to inspire them to use your alternative.

When I send big chunks of money to people overseas, I only send via PayPal.

If they don't use PayPal, I don't do business with them.

If you pick an alternative, make sure you factor in the extra expense of time required to pitch your clients + also time required to resolve problems with alternative payment system when problems occur...

Like can you reach a human? Do they speak your language? What happens when money's lost? What happens when client requests a chargeback/refund?

PayPal is big because they have worked out many kinks related to the above questions + many other edge conditions, that alternatives have challenges processing.