Mal, please do tell us what you think of the two...However, please remember that the speakers will interact with your up-line gear and that this will, IMO, color the speakers in a way that you may or not like. The Extrema's need a lot of current to shine, the GH's less so, but still need an amp with good stick up front. My main point is the synergy with your other gear and room, is going to be a factor in your opinion of the speakers.