+1 for Scosche MagicMount
I prefer the mount on the center vent though.
The mount itself has rubber clamps for thin or thick vents. The 86 has 'thick' vents... However, if you turn the mount so you're using the clamps made for 'thin' vents, it won't budge. After several months use, the mount still clamps on well. It'll start to slip off if you give it a violent shake, like running over some bumps or potholes. A simple push back into the vents and you're good to go.
I've never had it completely fall off the vent, but if you don't re-adjust it after each violent shake it will fall off the vent eventually. Just don't drive over a series of potholes or broken pavement and you'll be fine.
