I had just seen a used Keeley Modded Ibanez AD9 in guitar center today for $149.99
and coincidentally the MXR Carbon Copy costs just as much new.

But what I want to know is which would be the better pedal to buy. both are the same price, and I wouldn't mind owning a used pedal, nonetheless it's modded.

or if someone can be convincing enough to explain to me why i should just get a boss dd-3 or dd-6 instead, please do tell.

i'm more concerned with tone than i am crazy noises, but i do need delay to fill up some space and for a few specific covers (fcpremix, a few muse songs, etc.)