Thank you - all of you for helping me choosing between the RS1i and GS1000i.
I am huge fan of Quad electrostatics, and really love the "clean sound". However, after trying the GS1000i and PS1000 i really was never convinced. They are really nice on classical music just like electrostatics. However, I do like opera - and the vocals are really, in my opinion, much better on the RS1i vs. GS1000i. It is like the music is not "alive" on the GS1000i - with exception of pure classical music (preferable when listing for several hours - the design is very comfortable).
Furthermore, rock, jazz and pop music is considerable better on RS1i. In my opinion is it not even comparable.
I wonder - if you consider to pursue the pure and clean sound - why not purchase a pair of electrostatic head phones?
Please not that i have only tried the phones a few hours (demo versions). I will come back with a better review when i have received the Mapletree ear+hd amp.