Odoo, an open source invoicing software, produces factur-x invoices systematically (whatever the country): very convenient as it's parsed automatically.
Invoices in Sweden have a design created for easy OCR-scanning. I prefer this way because it means that there can be no discrepancy between what I see and what the machine sees.
Another benefit is that it's really easy to recognize an invoice at a glance, and you know exactly where all the info is.
Last month, we lost a big project against SAP (budget 5m€): the company choosed SAP because their holding was willing to pay for the project. Last week, the same prospect came back to Odoo: as the holding could not afford such a project anymore, the company has to pay from its own budget. So, they choose Odoo (<1m€ budget)
I believe the next wave is a replacement of proprietary expensive business applications: ERP, SAS, BI...