I love the ease of control, and have two separate homes on my application. It's easy to toggle between locations and set the temperature several hours out.
After being surprised with HVAC issues (no heat in winter/no AC in summer) in our vacation home, it’s very reassuring to check in on how things are working in between our stays. It’s also nice to adjust the temperature ahead of our arrival. Seems to work great!
We purchased two T6s with our two new 80,000 BTU and 120,000 BTU furnaces for use in our church. They were easy to program which is important, but what is best is that other individuals can be invited to have access to the controls. This is important when you have multiple individuals responsible for HVAC control.