The verdict
For a small Dutch or Belgian business with simple invoicing, pick Moneybird. It gives you invoices, bookkeeping and a prepared VAT return in one product, and the plans are built around that job.
If you sell subscriptions with usage, credits, several plans or quotes for larger customers, pick Chargebee. That logic does not belong in a bookkeeping package.
If you need both, check the route between them before you buy. Chargebee lists integrations with QuickBooks Online, Xero and NetSuite, and Moneybird says it leaves integrations to partners using its open API. Confirm a workable connection exists for your setup, and ask your accountant.