Least amount of junk... in a room topic

Hey everyone..
So i need a bit of ya'lls opinions. I have been running insertcoin for a while... im getting to a point where i have been noticing a bit of lag here and there. I have tried the others but just none feel as fast as i really want.

Im looking for a rom with the following:
- Less junk and frills (light, almost 0 animation)
- Lollipop
- Sense


I have tried the following roms (maybe a while ago but have attempted)
Insertcoin
Sky dragon
CM12
CM12 tangent (on there, not sure what its called)