I recently reviewed the Zooz Zen 21 smart switch which allows you to use the switch in single pole or 3 way applications without dishing out extra dollars on a companion switch. I purchased the Zooz from Amazon for about $45 CDN.
Install was simple and straight forward. Zooz customer support was awesome in helping to re-wire both switches so that it can be controlled on both ends and add smart functionality.
Below is a video of the Zooz Zen21. Check it out and let us know what you think.