I personally think that once v3 is stable enough to be the player of choice for everybody, Mark should dump the VolAdj stuff from Hijack. Unless there's a real marked difference between the two algorithms...

Currently there is a marked difference between the two algorithms. Both work on a similar principle, but take slightly different approaches and result in different kinds of "feel" to the compression. Some people will prefer one over the other. Also note that Hijack's parameters are adjustable.