Which wall switch to use?

Just picked up a couple more wall switches. Needed to make a decision. Did I want the wemo light switch that works straight off the wifi or the GE/Jasco switches that requires z-wave? The wemo comes with wires to connect to the electrical. Problem with that is it takes up more space in the box. The wemo also doesn’t quite fit the existing wall plates. That’s not a problem if just one switch in the box because they supply a wall plate that deals with the form factor. However reality is many switches are in a multiple switch box. GE on the other hand fits flush so you can use the existing plate and the wires plug into the switch just like the standard switch you removed them from. Net easy fit all the way around. Since we already have the Smartthings z-wave hub this was a no brainer. Of course now I need to actually install them.