Before the ZU, I always used bumpers. All of my phones prior to the Note 3 I used the Acase Superleggera PRO which was a dual layer (flexible silicone underneath a hard TPU shell) case that was awesome. They didn't make it for the Note 3 so I used a similar shell. Nonetheless, I never used a flip case until the ZU.
Only because of the size of the device did I purchase a flip case. I thought that with a device this big it would be harder to protect the screen.
My question to you all is: What type of case do you use with the Z Ultra??? Bumper, flip case, something else?