Delay seems to be a never ending quest for me! I have tried (and subsequently sold on) a BOSS RE-20, DD-3, Catalinbread Echorec, Montavillian, Malekko 300b, Mad Professor DBD, Maxon AD9-Pro, AD-10, MXR Carbon Copy, Subdecay Echobox, EQD Dispatch Master, and I have an EQD Disaster Transport Jr en route to me. It's a sickness, I'm pretty decisive with most types of effect!
What I will say is the DD-3 is a great pedal if you just want a solid digital delay, no frills, no oscillations, nothing too shoegazey, just a clear, v digital sounding delay. It you just want to make noise, the carbon copy is a really good analog delay, but was a tad too uncontrollable for me, and quite noisy at longer repeats. It was v close to being the one for me, and I'm hoping the disaster transport jr, with a tone control for the repeats, should do the job, but history is not on my side here