The three most popular assistants are as follows: Google Assistant (Google Nest Mini and Nest Hub) Amazon’s Alexa (Amazon Echo) Apple’s Siri (HomeKit) Those aren’t your only options, though. You can use Microsoft’s Cortana (we suggest integrating her with SmartThings) or simply go with a more generic speaker. If you don’t want to break the bank, both the Google Nest Mini and Echo Dot are affordable options for most income ranges. You just won’t have a smart display on the device.