At first glance, many will pass this off as another "good, but not great" pedal, simply based off the fact that it's made by Boss. But when you actually plug it in, set the rate around 12:00 and crank the depth, it immediately becomes apparent that this little blue box is something truly special. The chorus sound it produces is perfect to my ears: gentle treble roll of that makes it sound warm, slight midrange boost that helps punch through, and a very very slight volume boost. As well as this, the loss of low end is negligible at most and does not make any difference in a live mix.
Whilst the lack of features like delay time and feedback may be a turn-off to some, it certainly isn't to me as no matter how you set this pedal it will still sound great (although both knobs full might be a bit too weird for some!)
Overall, I rate this pedal 19/20, the only con being its rather high price point
Boss Ce-2 Chorus
Classic analogue chorus with rate and depth controls