I agree with Ovtcharov on his advice for backhand rubber , i personally have played the Andro Impuls Speed (1 year) and the Joola Energy x-tra (from a mate in the club) both in 1,8 mm , i found the Andro a bit too soft (is really VERY soft i would say 35° softness, but still very good BH-rubber, spin goes away rather quickly), i would prefer the Joola Energy Extra (which is a little bit harder, but equally fast and i think a little bit more spin also, to be bought at Decathlon for 28€ !), i play now with a Tibhar Genius Optimum Sound 1,8 mm (i got this one for free from a friend and restored the grip with my WD40 trick and played it this whole season !) and find it to be also a little bit too soft but this would be a similar rubber to the ones Ovtcharov (the poster here) advises.
A standard Tibhar Genius would be very good also (but is harder). I played with a Tibhar Aurus soft (1,9mm black) also and found it to be very very good at everything.
There are so many very good rubbers today, too much in fact , we keep searching for the "perfect" rubber but should focus more on our technique and tactics.
The manufacturers keep feeding the EJ's with "new" rubbers (Tenergy 80 !?
) but what is really really revolutionary ? I think that i personnaly would not play much weaker with a standard good old Sriver L. (i do like the glue sound my Genius makes !)