Thermostat recommendation

I currently have the Filtrete CM-50 from Home Depot using the plug in with the VeraLite. The problem I have with that thermostat is that it loses the wifi connection on power loss. I have the thermostat in a vacation home and I need it to have a reliable connection. I am looking for some recommendation on a new thermostat that will not lose it’s wifi connection on a power loss. Some of the ones I have found so far are:

Honeywell TH8320ZW1007
SchlageLiNK TZEMT400BB32MA

I know this one is not ZWave compatible but I am adding to my list:
Ecobee Smart Si

Any help would be appreciated.