AT the risk of sounding redundant, most of those effects were great for their time, but hardly worth installing. Fx3 being the one that could add something different. Everything in Fx 1 or 2, there are better or equivalent things in Sonar. Sfz is kind of redundant because ,most of the functionality is in dropzone and dimension. square is very similar to triangle and pentagon (same programmer). I'm sure there are subtle differences, but I doubt it is big enough to make it worthwhile.