This matches my experiences too. Those newer white machines always work for me. Please post updates @Oatmeal how good the Starlink works. I am thinking about some rural properties but the downside is no Internet out there but this would solve it. I just want to see how fast you get.I have used it at McDonalds, any restaurants that take credit card. Basically any stores that have a handheld POS for CC. One store I bought mattresses from had a separate machine for foreign credit cards as they were aware their other machine doesn't work with foreign CC. So you might need to ask. We also used it a Correfour or maybe Jumbo (can't remember which or maybe both), anyway sometimes ask them to charge as a debit card also works. We notice the new white machine with blue (mercado pago logo) works seamlessly. We have also used it at farmacity. Oh, I just bought Starlink from Fravega using my cc withe the recent 25 points exchange rate increase so that was nice (they had old black machine for the pos).