Xero Bridge by Parex

This app does everything I need for my Shopify - Xero integration.
Tax Rates in my country sorted
Different tax rates for different items where needed (had trouble with other apps)
Automatically assigning different products to different xero accounts (had trouble with other apps). Skip the research phase and just go with this app - the support team where super attentive to get things set up how I need them for my business and has been smooth sailings since.