This discussion of bass pedals is great. chas is right about playing midi pedals in general. They are either flat dead or sustain for eternity. I bought an old set of Crumar PB2 to replace my PK5 and MidiStep pedals. The Crumar is old and self-contained. It has a 16' and 8' sound and... volume and sustain wheels. The adjustable sustain is what makes them so nice. Just enough to sound more realistic than the modern midi pedals - unless you go into your sound source and edit a sound specifically for the pedals.

I don't think anyone who plays pedals, plays them without inserting a little left hand. Today's music is very bass oriented, so playing those logs ain't what it used to be. I've seen Felix Cavalieri play foot bass in concert and he does a great job, but it's something most good B3 players could do. Today most guys you see playing B3 are standing up and don't even have the pedals attached.

I think there are a lot of ex-organ players here so this discussion should move to its own posting.