I love the sound of phasers, so I'll confess my bias up front. This pedal sounds fantastic, but it's not perfect. Let me explain:
+Distorts less that other phase 90 variants I've tried.
+Very little volume change when engaged.
+The speed knob goes so slow that the sweep is almost still. This makes for an awesome mid-boost that actually has a lot of sonic similarities to my Xotic EP Booster! (Mmmm...is that why Van Halen loved both the Phase 90 and the Echoplex preamp?).
+Not too swishy, i.e., it's musically useful and not just a special effect.
-No LED. Didn't think it was a biggy, but in the dark an LED is incredibly convenient.
-No AC input. Also didn't think it was a biggy at first, but I like this on my pedalboard after my wha and I have to unplug the input after use. Since it's squeezed onto the board and velcroed down, it's a bit of pain in the butt to disconnect the cable and half of the time I forget to do it. That kills the battery.
-The switch (on mine) was funky. It was loose and now sometime sticks.
-It's hard to fit a battery into the case because of a layer of foam covering the circuits. I ended up cutting away some of the foam to make it easier to screw the back plate on.
Sonically, I'd give this 5 stars, but this pedal definitely is in the 3 range in terms of construction and features. Nevertheless, I love it.