Just had a very brief demo of the GX 200s as I'm thinking of upgrading from my current MA RS8s. I listened (briefly) to them on the end of Cyrus CDxSE and 8XPd (I'll be using the Cyrus DAC xp+, and Mono Xs). The step up from the RS8s was immediately obvious. The mid to upper range of this speaker is delightful, really smooth and sparkly - bright, yes, but definately not harsh, with a very open presentation. The lower end was much more tightly controlled than the RS8s, and with no apparent boominess (which I get with my RS8s). Overall, they feel really well balanced. The most impressive thing for me was the smoothness of vocals - superbly presented. The build quality is exceptional, and knocks the socks of anything else near its price range.
Any negatives? Not really a criticism, but I could hear that the speakers had much more to give, so will probably perform much better when I get the monoblocks and DAC XP+ on them. The WHF review of the GX 50 stated that those speakers will not cover up harshness, but neither will they cover it up (they are very transparent speakers). I couldn't put it any better for these. Very much looking forward to a proper demo.