It doesn't matter about leakage rufrost is only interested in sound quality. Which makes life easier. I personally think you should get to have a long listen to HD800 against your current favourite rs2i with the p1000 thrown In and the gs1000 too. I am curious as to why the rs2i was to yojr taste because the signature grado sound from the cans I've heard are all about creating an exciting wall of sound with driving bass and strident highs. That sound in a one off situation has an immediacy but to my ears I've preferred the elegance and articulation of the hd800. The bass and treble and mids were better on my lcd2's than the hd800s but I sold them because I could follow the music better on my hd800s.
Does that help?
1) Thank you for supporting and explanation of what I already wrote to others))
2) Of course it helps, firstly, because I really need opinions of owners of those headphones~ what they think about them and so on. Secondly, now I now that LCD-2 in comparison with HD800 are worse for my situation, as I oriented on vocal, classical and Church Liturgy~ natural sound and music.
3) You see, the problem is I have no place where I can listen those headphones, because I live in Ottawa and partly in Russia in not big city, so both of those places do not have wide variety of top headphones which is available for hearing.
4) I really eager to hear mine C4 Pro with top Grados,HD800 and LCD-2, but there are no place where I can even listen to them((