Thanks for the answer.
Well, clearly it's more convenient to fly SU, because of the direct flights, but I'm willing to reroute through Prague if that's what keeps the miles coming faster (more segments).
Essentially, the place I work in isn't very rich and it'll end up being about the lowest fare among the two.
So that being said, am I right to assume you recommend SU?

Also, does SU even have a lounge in SVO? It's not on SkyTeam's site.