This is the only MXR pedal I haven't been thrilled with. It does everything well, but has a bit of hiss. I use a (provided) SansAmp DI on a regular basis, and like it (plus it's dead quiet), but was looking for something smaller and less expensive to sit on my board. Feature-wise, the MXR does everything I need and sounds great. Like all newer MXR pedals, the LED is super bright.
 I bought this used, and the hiss was very noticeable. I sent it to Dunlop to have it looked over and brought to factory specs for $50. When I got it back, the hiss was quieter, but still there. A note with the pedal indicated that it was within factory specs. I still use it, but when I'm where the SansAmp is, I use that.