I love the idea of the zero touch provisioning on the Sangoma. All of my workers are remote, so when new hires come in, I can just drop ship and not have to lay hands on it, or do a remote desktop session to set it up. I wish there was bluetooth on the Sangoma, but not a dealbreaker. I understand that it may be coming on later versions. The tight integration with FreePBX will make it a go to for me provided there is something the client needs that is not there.
LIke you, I hate the Grandstream firmware that you can’t roll back. It seems they are getting more sloppy with buggy firmware, in my opinion. The 1.0.4.17 bricked several of my phones before I was able to stop the updates. That and the fact that GS is not very receptive to getting issues solved. They will tell you to open tickets, but thats as far as the process goes. I have talked with many on their forums that have the same bugs, and GS will tell you they can’t recreate it, and be done with it. In hindsight, I would have much rather spent $30 or so per handset more, and not have to put as many hours in troubleshooting them. I bought into the low price point for the client, but as they say “you get what you pay for.” The Sangoma’s really have a great price point for the feature set, so I’m really excited to get my hands on one. I preordered from E4.