The verdict
Ask your accountant first. If they work in Twinfield, pick Twinfield. If they work in Xero, or they are happy with either, pick Xero when you value public plans, adding people freely and an easy way to connect other apps. For most small teams I would lean on the accountant's habits, not on a comparison table. Switching later means moving history, and that is painful whichever way you go.
If you are Dutch and nobody has a preference, check Xero's local VAT handling, bank feeds and e-invoicing before you commit. Compare Exact Online and Moneybird too. The right package is the one your accountant is happy to open every month.