I've had luck recently with the SmartThings F-OUT-US-2 smart outlet/plug, their newest (V4?) of these smart plugs. It was on sale last week so I picked up a few. I added it as an "Appliance Module - Centralite Appliance Module 4257050-RZHAC" under "Dimmers and Lights". Vera tried to add it as a smoke sensor, so I had to change the device_type to BinaryLight:1, the device_file to D_BinaryLight1.xml, the device_json to D_BinaryLight1.json, the category_num to 3, and the subcategory_num to 1. They all work fine* now and even report the watts being used, which Samsung doesn't advertise as a feature.
*The only issue I'm having is that sometimes when the F-OUT-US-2 is on and another zigbee device is turned on or off, Vera reports that the F-OUT-US-2 turned off. The F-OUT-US-2 never ACTUALLY turns off, Vera just thinks it did for a few seconds and then corrects itself a few seconds later. The only issue this poses is that I had a scene in which when one device turns off (Christmas tree), two more turn off. Vera's false reporting of the F-OUT-US-2 being turned off triggers the other two to actually turn off. So I had to alter that scene. But for basic control of a device on and off, and even reporting wattage, this thing is solid.
If anyone has any ideas on how to troubleshoot the one little issue, let me know. I'm wondering if there's a setting somewhere to alter the polling or something so that it doesn't do these false off reports anymore.