This thread cracks me up...we have the OP deciding on a pair of speakers without seemingly hearing them and how they interact with his current gear and room. We have Rwwear posting how inefficient the Extrema's are...which in my experience is very true! Then in a recent thread on another forum, we had another member trying GH's and Extremas with a low powered SE amp. Wherein, when said amp failed to work well with these speakers, he decides its the speakers fault and buys something entirely different. Folks, the GH's and the Extrema's are two VERY different speakers! Depending on your ancillary equipment and taste, they will either work for you or they won't.
But without an in-home trial...or at least the ability to hear both speakers for yourself, all else is just meaningless, IMHO..:0)
But without an in-home trial...or at least the ability to hear both speakers for yourself, all else is just meaningless, IMHO..:0)