re: What's the go-to wifi connected thermostat these days?

I've got a 3rd gen Nest downstairs and a 4th gen Ecobee upstairs.

Hardware wise the Nest just looks nicer with the metal ring which is available in different options. Also, it's easier and quicker to change the temperature with the Nest because of that ring than the Ecobee. Though it looks like the newest model has no metal but still looks nicer imo.

Changing the temp on the Ecobee can be frustrating sometimes. When you lift your finger off the display, temp will change from what you thought you had it at.

Another feature I like is that you can customize the Nest display. I have mine to show the weather and temp outside. This is useful as we walk by it get to the garage or front door.

The Nest's advantage is its learning capability but I wound up not using it. I prefer manually setting a schedule by day.

From a software perspective, I like the UI of the Ecobee mobile app better. It's easier to setup and change schedules. You can define settings like Sleep1, Sleep2 etc and assign a temperature to it and use those to build a schedule. You can then later change the temperature of the setting and it gets updated in all the schedules. There is no equivalent of this in the Nest software.