Hi Solange, it depends on your customs and tax in Holland.
In the UK if we get .com vouchers Amazon will only let us spend them on .com. When items come into the country we have to pay tax on them. We then also have to pay a handling charge for the post office to…well not sure really…it seems to cost us an extra £5 for them to stick a sticker on it. Perhpas we have to pay to be taxed? Wouldn’t surprise me knowing our bloody governments. So we don’t accept .com, we accept .co.uk so we don’t have to pay for our gifts!
So it depends if you have to pay tax on anything entering your country as to which option is better, you may even be able to use both options?