Generally negative
A couple of commenters felt the spring reverb mode doesn't capture a true 'surfy drippy' spring sound, suggesting dedicated spring units do it better even if other modes shine.
Generally negative
One commenter directly points out the MXR lacks stereo in/out options, unlike the Neunaber Immerse which supports true stereo operation.
Generally negative
A user notes the pedal is power hungry and won't function properly without adequate power supply, a practical consideration for pedalboard planning.
Mildly negative
One user mentions the price is a little steep for what is fundamentally a single-function reverb pedal, though still considers it a strong contender.