Feature Request: Integration of Taxamo assure into the checkout for UK companies selling to EU

Whilst we are waiting for the Taxamo integration for Shopify Basic, which of these solutions is the best for a UK B2C store selling €40 items to the EU:

https://www.crossborderit.com

https://apps.shopify.com/eurora-app

https://apps.shopify.com/eas-eu-compliance

Or any others that are out there?