As others mentioned, Bluetooth is not an option for the time being when considering SmartThings integration, so you will either have to wait and see what the future holds or go with something else.
I personally have a Kwikset Kevo and it works great, albeit it’s not controllable via ST, and they have been promising their “Kevo Plus” service (which allows remote control similar to what the August Connect does) since January, with no actual product as of yet. Keep in mind that if that ever becomes available it might also be incompatible with ST (again, a closed system similar to what August is doing).
With that said, as a Bluetooth-only product the Kevo does work great. You can pair your phone with it and lock/unlock by touching the deadbolt “rose” on the exterior. You can also send temporary e-keys to other people and be notified when they use them, expire them via the app, etc. Overall it’s a really nice product and I wish there was some integration with ST at some point, but I’m not holding my breath.