Which SVO terminals will you be in?
If you're in D, you'll have access to Jazz and Blues if you're traveling internationally, Klassika if traveling within Russia. I've not been to Klassika, but there isn't very much difference between Jazz and Blues (just on different sides of the terminal). Both are nice:
http://www.aeroflot.ru/cms/en/flight/lounges_pr
If you're in F, I haven't been in all the lounges, but the ones I've been in haven't been anything to write home about.
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