#1
Local GC has a used Fender chorus box for just under $20. Might be worth giving it a trial; but will it do/make $20 worth of difference?? After all twenny bux is still.....well... about $14 now!

Any first-person experience welcome
#3
chorus is nice if u use it right. makes for real nice pieces wen played over clean channel with single notes. basically it adds a harmony guitar for a bit of "shimmer"
#4
I love chorus.
I use it on my cleans to make them thicker and fuller. It's well worth the $20 for it.
What it does it takes the clean tone, changes the timber a bunch of times, then mixes it back with the dry signal and it thickens things up and makes it sound shimmery.
At higher settings it can get into alien warbling.