best speakers what do you think

My pre amp is nad m15hd2 et amp m25 with kimber kable 12 tc in home cinema my speakers is focal 826 w et 807 w et cc800 w with paradigm servo 15

Have you listened to Vandersteen speakers?  No matter your price range, they have an able contender. 

Can you make audition for both of them ?

I suggest you consider the Bryston Middle T overwhelming powerful speakers should match well with your power amp if you bi-amplify them with 2 set of speaker cables once listening to music you will have 2x160 watt going for each speaker with astonishing results.

Focals are extremely revealing and they need very good amp and source to shine. Such gear usually tends to be even more expensive than the speakers.
Don`t worry too much about cables. Kimbers are good.

I agree the Focal needs better amplification than the NAD , Regarding the SF Venere I am not sure that they for everyone taste they a bit too silky and smooth not sure that they are a good match with NAD. An audition is s must it's a huge gamble to buy any of them without testing them with the OP system.