Gershman speakers are not under rated or average at all. In fact, they are outstanding speakers. I am currently using a pair of Black Swan and have yet to find a better speaker but my searh for audio perfection doesn't stop here.
Back in 2002, I owned a pair of RX20s for about 2 years and enjoyed them very much. Speakers were driven by Sim audio gears. Great performance for the money and such a small foot print. Give these puppies a lot of clean power like moon 5 or McCormack DNA 225 or 500 amplifier and they will sing. My only complaint was that it's not tall enough to convey a nice sound stage, vertically, so I placed them on a home made sand filled stand to bring to overall height of the speakers from 36" to about 43" to get the proper sound stage and the problem solved.
Since then I owned about 20 other speakers including wattpuppy7 and sophia, Andra II, Kef 205, Vadys 5A, Dali Megaline, Maggies 20.1, Revel Salon, and Usher Be20 just to name a few. As of right now I have the Gershman Black Swan in my system powered by a pair of Conrad johnson amps and preamp (premier 350, LP70s, and CT5). This is the best sounding speakers I have heard in my house to date. Of course, this is just my opinion. I hope this help....