I bought this delay to replace a TC Electronic Alter Ego x4. The Alter Ego sounded great, but it lacked a 'Mix' knob, modulation control on the front panel, MIDI CC control, and you couldn't change the delay type without also changing the delay time. The Nemesis can do all of these things, and more. The Neuron app that allows you to deep-edit the patches also goes much further than TC's Toneprint. The pedal sounds beautiful straight out of the box, especially the vintage emulations which are what I'm looking for! They've recently added two emus of the Binson Echorec which are fantastic. The unit can accept stereo line-level inputs so can be used as a desktop send effect in your studio.
The only reservation I have is the quality of the central patch-selector knob. It feels cheap and plasticy, and slightly wobbly. The rest of the build quality is very solid so this was a disappointment.