I use it every day on my commute, too. I hope Google does acquire Waze, so they can get rid of Bing search. I want Google search on Waze.
Turn by turn are just as good on Waze as it is on Google Maps.
I find that Waze provides better routes through traffic than Google Maps. I have discovered a few better routes using Waze. Also, if the traffic conditions change, Waze will inform you that there is a better route and reroute you automatically. It also informs you of any traffic or collision on your route. Google Maps doesn't do this. The traffic information that Waze provides is also better. It tells you the speed of traffic on various routes. I'm not talking about just colour coding. It tells you how fast in km/h how fast the traffic is moving. The information is also easier to see while driving.
I also find that the default zoom level on Waze is more to my liking. When using Google Maps, I keep having to adjust the zoom level every time I use it. Just my personal preference, but I am much happier with the default zoom level in Waze.
I love having my cat avatar for other Wazers to see.