Accountant and fractional CFO here... Better question is to ask yourself what you want from the software and what will it be paired with?

Does the POS you'll be using like Toast or Clover integrate with it and any other systems you'll want to use?

If you don't like how the one part of Restaurant365 works, can you switch off and use something else seamlessly? (payroll, inventory?). You're locking yourself into a single platform and giving up some flexibility for an integrated system.

As far as accounting goes, QBO is the standard because it universally excepted and you can find a zillion people (CPAs, bookkeepers, accountants, aunts/uncles, etc) that know how to use it. Restaurant360 not so much. Does that matter to you?

QBO can grow with you so the scale thing isn't an issue. I have clients that are >$400M on QBO. I have others that are <$10M that are on other systems.

Really comes down to what you want and need.

imo, get the best-in-class software built specifically for your industry it will help you operate your business much better than a generic accounting tool.