What is the best accounting software for a new home service business?

The one you use! haha

Both Xero and QuickBooks are staples. Both sync with jobber which is pretty cool. The main things is to fully utilize them and not half do it. Might not seem like a big deal when you first start but trying to undo bad financial tracking habits will cost you money. My advice would be hire a bookkeeper right out of the gate and if you don't know how to read a P&L or balance sheet, learn it and don't just trust that your bookkeeper knows what they are doing. They are great for monthly classifications of things but you need to have an actual opinion of where certain accounts should be on your chart of accounts.