I have been incredibly happy with Schlage Connect. Works near flawlessly and battery life with zwave+ is significantly better. Best part unlike other automated options, is you are able to use a physical key as a backup, juuuust incase your tech fails. Though, I've never had to use the key in nearly 2 years. Alexa integration works well, and smartly requires a pin code if you choose to enable unlocking your door by voice. Plus it's Schlage, a company well known for making safe and strong locks. It's your home, so safety should be the #1 factor.