I have this camera since it was released back in 2013. I think it is time to get a new camera. My two choices are Sony CX900/AX100 and Sony NX100. My AC90 suffer a lot in low light. The sony cameras have 1 in sensor which are great in low light ( i hope) and record at 50Mbps

HAve any of you considered in replacing your AC90 ?

I don't have the AC90 but have the little panasonic HC-X920. I think they share the same sensor.
Very sharp image but my sony hxr-nx3 is (much) better in low light. Also my nex-ea50 is cleaner in low light.

Before the little panasonic I had the sony XRV-500 and I'm rather it was better in low light.

So sony is very good low light.