I've been trying car mounts for years. I think I've finally found the best combination of convenience and versatility.
I have two very different uses. When I'm the driver I don't like it on my dashboard for two reasons. 1) It's distracting. I know pretty much where I'm going to go so I only need to see the maps if it's a tricky turn. I don't want it in my face all the time. 2) When the phone is up high it's washed out and hard to see. So, for that reason I like it low, like in a cup holder.
When I'm a passenger and my wife's driving (which she likes to do on road trips) I like it suctioned to the passenger window so it's at my fingertips.
I found a way to do do both. I bout two separate items. A sticky suction mount and a cup holder flat mount that is a surface for the suction mount. They both work great and I love having the phone near my console shift. Easy to see and doesn't wiggle or vibrate.
This is the iOttie sticky suction mount I bought and
this is the cup holder mount.