I have 3 of the Filtrete WiFi thermostats (installed for about 2 months now):
Link to Home Depot Product PageI have not had any problems with the thermostats, and like their appearance compared to the Venstar, as well as the iOS app available for them.
I am using the proof of concept Indigo plugin for them (
viewtopic.php?f=18&t=8084), but am not yet using it to actually change settings on the thermostats. I'm simply relying on schedules in the thermostat at this point. There seem to be some communication issues between the plugin and the thermostats. It's said the thermostats have weak wifi, but I can't really confirm that. Without the plugin running, they don't have any communication issues with the iOS app, the web site, or with another monitoring system I have set up, which polls them every 2 minutes for temperature. With the plugin running, two of the three frequently have communication with Indigo disabled, but the 3rd (which is the first one I set up in Indigo) doesn't suffer the same issue.
I have never used any of the Venstar models, so I can't compare them. Certainly the Venstar has much stronger Indigo support at this time. Not really a recommendation. Just passing my experiences along.