I use this pedal for psychedelic playing. This + reverb + strong bass guitar and rhythmic slow drums is just epic psychedelia.
What I really love about this pedal is, first of all, its price, and, secondly, its features! Not only you can control the depth and rate, but also the intensity - from very subtle to jet flyby to glitch sounds which I love!
The only small drive back is that its difficult to quickly adjust the tiny knobs. If you're playing at a gig and need to decrease depth, for instance, forget about doing it with your feet. However, that really isn't a big problem. The compact size more than compensates for it.
Buy it while it's still so cheap!