The only flanger pedal I have ever used is the DOD FX72 Bass Flanger.
All I can tell you .... that's a winner !!! The knobs have a wide range of control and you can achieve many different tones, from classic jetfight-style flanging to speed-up psycho bubbling flanging. You can even reach a kind of tremolo by putting the speed all the way up and setting the width pretty low. Huge versality. No special volume drop or boost, the pedal is pretty respectful to the original sound. What I absolutely LOVE about the DOD FX72 is the very slight overdrive you get automatically at the end of the flanging cycle, when set to a slow speed. It really adds something to the sound.
I like adding some flanging to funkify things here and there, especially along with the Q-Tron+ or even the Dunlop Cry Baby Bass. When I use the FX72 with an overdrive or fuzz pedal, I am in flanging heaven.
The only complain I can tell about the pedal is its crappy plastic footswitch. For some reasons, it started to work every other time I kicked it, and suddently didn't work at all. Over the 6 old DOD pedals I've owned, this is the only one to cause me such a footswitch trouble. The FX72 goes pretty cheap on Ebay, I think I'm gonna get a new one.
Hope that helped
