New Moto X Style (XT1575) owner with some questions.

1. I've seen some roms with Clark is it different than XT1575 model or the same?
2. For rooting/unlocking should I use http://ift.tt/1VeVYz5 or http://ift.tt/1O1jddj?
3. Any kernel/governor recommendations?
4. What are your experiences with this device?

from xda-developers http://ift.tt/1RH6PkF
via IFTTT