Boss CE-5

The pedal is quite simple to use, once you expirement with it for a short while. The Pedal has an E. Level (Wet/Dry signal), Rate (Vibrato effect), Depth (Level of Chorus), and a Filter. The unique thing about this chorus, over the Boss Super Chorus, is its Filter. Its a two-stage filter, so basicly you can filter your Hi's and Lo's (Bass & Treble). The filter is really the reason i chose this pedal, because you can achieve alot more sounds w/ it. This pedal can make a large variaty of sounds. I can tweak this pedal to perfection at times. Currently I'm playing a MIM Stratocaster along w/ a Peavey Classic 30, and the pedal can achieve the sound of my favorite artists like RHCP, Janes Addiction, and Jimi Hendrix. This is my personal favorite Chorus pedal, and I've owned a EHX small clone, and I think its a great pedal as well, but I prefer this over it, simply because you can tweak this Boss to sound exactly how you like.

I use the CE-5 mainly on my bass pedalboard. it gives that nice shimmer without taking over the sound. The reason this works as a bass chorus particularly well is the filter option to limit the effect to the highs (or the lows if you'd so prefer, but on a bass the lows become quite muddy). It makes those runs to the upper register of your bass shine and ring out nicely, all in all it can be very subtle -
you might be the only one that actually knows its there but its still there, enhancing the the colour of your sound.
I believe Duff McKagan from Guns N' Roses used this pedal to get that liquid, sparkling clear sound that the bass has on Use Your Illusion albums.
Of course this pedal works wonders on guitar as well, again I prefer the subtle nature that this pedal can give but you can go all out if you so desire, just experiment with the depth and rate knobs to get the sound you're looking for. Compared to some other chorus pedals, it might not be so instantly recognizable or as unique in sound but you can switch it on without noticing a radical change in sound or an audible "click" sound, that is sometimes an unfortunate by product of an effect.

Sturdy as they are, Boss pedals are built to last and are user friendly, not too complicated but get the job done. Great option for smooth natural effect to give your clean sound the character it might lack.