The new Zigbee 3.0 devices by Jasco are getting good reviews here. Smaller housing, no heatsink ears. Currently $33 for the switches, $35 for dimmers on either Amazon or direct from Jasco.
Try number 3 to get a useful link. Here’s a link to Jasco’s catalog
Ah! TIL something new! I’ve never managed to upgrade firmware without removing devices from the SmartThings mesh and re-adding them so had not discovered that little tidbit!