Originally Posted by
impaler
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So lots of choices and little consistency. Personally I think travelling on an overnight sleeper in 2nd or 1st class, drinking "chai" and making new friends is a more authentic experience and I would go for the tried and true
Red Arrow. You can get a lower bunk in their M/F coupe car for RUR 2100+, but that would be a specific request that should be preferably booked in advance.
Thanks for your help. Last Friday, I ended up traveling 2nd class to Moscow from STP on the #037 train. Everything was fine and I slept easy.