The delay pedal I currently use in my setup is a
NUX Tape Core Deluxe, which is a digital emulation of the legendary Roland RE-201 Space Echo tape delay, and it does an amazing job at recreating just that, with access to all the parameters of the original unit, plus more (like control of the tape wow, flutter and saturation, as well as the option of synching the build in tap tempo to specific note values for each of the 3 emulated tape heads), via the software editor that makes it possible to customize each of it's 7 modes (plus an 8th "Sound On Sound", looper mode), which reflects all possible combinations of the 3 emulated tape heads of the original Space Echo unit.
And with the delay time all the way down and the build in reverb effect turned up (as it, just like the build in spring reverb of the original unit, got a build in reverb effect too, which can be controlled, from completely off to a thick lush reverb, via the software editor) it even makes for a great dedicated reverb pedal as well.
In my opinion a better Roland Space Echo emulation than the Boss RE-20, but even disregarding that the NUX gives you access to more adjustable parameters as well.
The pedal (the tap tempo function by default is activated by holding down the foot switch for 2 seconds, but via the software editor it can be set to activate automatically whenever it detects the foot switch being tapped more than once (twice (or more times) after each other). The "T.Lock" effectively being a preset save and recall/activate setting, meaning you can store 1 preset of how the physical control knobs are set, beside the overall/general settings of the "hidden" parameters that, as said, can be adjusted and saved to each mode via the software editor):
And here's how the software editor looks (the tap tempo can be set either to sync to whatever note values you chose for each head, or to "free form" react according to the time between your taps of the foot switch):