Best OS for battery saving? Newbie here..

[M1cha]

IAnd we don't miss any Kitkat "Features" because most of the improvements of newer Android Versions are already integrated.

My main concern about miui are the security issues. Google applied thousands of fixes since 4.1 release.

They should update miui to 4.4 as soon as possible

 

[Dr. Strangelove]

My main concern about miui are the security issues. Google applied thousands of fixes since 4.1 release.

They should update miui to 4.4 as soon as possible

Yes, you're right, didn't think about that.
Especially with the Heartbleed Bug it's about time for 4.4 Miui v6.