I flew them in March of this year from Shanghai to Madrid. Not too bad. The plane was quite new and clean. The service was adequate with unfriendly attendants. The other downside was that from Shanghai to Moscow, the flight is dry! (no alcohol)
The miles were credited within 7 days to my DL account.
I flew them SVO-DEL-SVO earlier this year. Other than the fact that it was on IL-96, everything was pretty good.