WHICH IS BETTER?

In terms of the Purist line, Dominus was the top of the line; Colossus was below it, as far as the company was concerned.  As to which is better in your system, you would really have to hear them in your system to make a decision, it could be that the lower-priced model works better with what you have.

Colossus Dominus great bass,stage depth,great sweet highs very quiet overall.

Thanks RCPRINCE and EBM for their opinions, taketh note.

Alexander