As the title says, this thing is a tank. Pretty much indestructable, and ready for the road.
On the downside, all the stability is compromised by a lot of weight and a big footprint. I personally like the big size, since you can not miss it with your foot, even when on stage and there is a lot going on.
This one is the version for low impedance, the high impedance version is the FV-500-H. The L-version would be used (in a guitar rig) after a buffer or in the effects loop of an amplifier. Keyboarders should always get the low impedance version.
The H-version is only suitable if you use the pedal as the first one in your guitar or bass chain.
The pedal has a lot of features, it´s stereo, can be used as a standard expression pedal (can control almost everything), has a minimal volume option and even a tuner out.
So if you buy it, you can be sure to always find good use for the pedal.
The price is totally fair, since it will last a lifetime!