That's it really. Don't buy on the promise of the roadmap, features coming, promises of new integrations etc. Buy if you are happy with how it works right now. Then, well, it works ok at least.
They will also take you out of their facebook group if you ask about the roadmap features too much.
Google business has been coming for 3 years or so, and you will constantly see messages saying its in the next update.....it never is.
Positives? It's easy to use.