Hey folks. I am in the market for a pedal that can do tap tempo, multiple delay presets, and looping. Both of these units fit the bill. I haven't been able to find much in the way of comparison threads via search, though I'm sure this topic has been covered. Right now I am leaning toward the DL4 because of the ease of use with the 4 footswitchs live (don't like the idea of cycling through presets with one switch on stage for the dd-20). Also, I want to use the looper for ambient pads and such. I have heard of issues with the dl4 looper clicking but I think that is a universal issue with loopers anyway (Ive never owned one so any insight would be great) Any and all commentary on the topic / units involved would be great. As it stands now I'll probably go dl-4 and sell it if I don't like it.