Homeseer has been pretty much rock stable for me for nearly 10 years. The HS2 to HS3 upgrade was painful because the core code moved to dot net. I like it because it runs locally, requires no ongoing subscriptions, doesn't rely on a cloud service and functions even if the internet is down. Agree that plugins cost can add up, but it just works. Voice announcements through my whole house audio system is great for alerts and reminders.