Honestly, i would recommend the RX100 mk4 over all those other options, specifically, the a6000 and a5100 because i've used both of those before.

Here's why:
1. In body optical stabilization. (works alot better than the OSS in sony lenses)
2. Built-in ND filter. (you can switch it on and off when you go in and outdoors, especially useful for vlogs)
3. Portable. (although the interchangeable lens mirrorless cameras like the a6000 or a5100 is small enough, for vlogging purposes when you need to take your camera in and out of your bag or pocket, this can get very cumbersome after a while)
4. Power bank chargeable (you can shoot with this for all day with a powerbank attached)
5. Did i mention internal 4K??????

This post has been edited by shanetsh: Apr 1 2017, 03:17 AM