Well its difficult to say..
Cm11 is base of it first of all..
As it is cm11 base and then added extra features...it got a bit leaa battery backup(if u use the features).. I mean..probam is loaded with hell of features....many of em..multiwindow and halo...and active display..blurr lockscreen...and notification on lockscreen...many of em...while cm11 is basic and simple rom..
But as they say... With great power comes more bugs
.. The features in it are not greatly integrated..u can find many bugs while u using it..(not big..bt small and annoying for me)..i have posted too many times
..just read probam pages n u ll get it..
So on one hand is cm11...rom with basic aosp feeling...and on other is probam with hell of loaded amazing and beat features so far u can see on any custom rom..
Battery is also good..
Bad part is as gapps are preincluded...in the flashable package...and when u boot in ART..gapps FC's... So its worst thing they did including gapps in zip...
U cant use ART
Personnel advice...
Use carbon id u want ART and good battery...use slimkat for light weight...
Be a medium guy and use omni like me...test ur patience and take chances with probam..
..hope i helped
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