I owned an actual Ibanez CS-9 back in the 80's. The model I'm talking about is the 2-button model. IMO, it was the best chorus I ever used. I have a chorus on most of the time too. IMO, the three best are:
1. Ibanez CS-9 Stereo Chorus
2. Peavey CMC-1 Companded Chorus Pedal
3. Danolectro Cool Cat (very similar to the old CS-9)