The CE-3 is straight forward and super simple. I keep it tamped down as a subtle means to filling out and softening the harmonics especially when strumming the Ovation. I do not enjoy the chorus it in conjunction with the FL-9 flanger. Personal taste. ~m
Got this pedal from my dad and as a guy who hates chorus I've found it very useful as it adds character and flavour to my guitar work. With the rate set low and the depth set high I get a very usable tone from it.
CE-3 had to be a successor for CE-2, but it sounds totally different. In comparison to CE-2, CE-3 is a bit cold, metallic and sterile and that is a shame unless you want your chorus to sounds so. It sucks tone a lot, bypass seems to be terrible. Definately the weakest chorus in Boss' line up. It can be found quite cheap (I got mine for 15$), so it is worth checking just for fun.
I just started using pedals seriously a few months ago. I held off on using a chorus because I thought it might be perceived as too cheesy. But I said "whatever".. it's ok to just be myself and like the pedals I like. This CE-3 is really pretty and thick-sounding. I can't stop using it.